Gary Randall Muehlberg: The St. Louis “Package Killer”
Overview
Gary Randall Muehlberg is an American serial killer whose crimes remained partly concealed for approximately three decades. Known as the “Package Killer,” he murdered four identified women in the St. Louis, Missouri, region during 1990 and later killed a man inside his home in 1993. Muehlberg also confessed to murdering a fifth, unidentified woman whose remains have never been conclusively recovered.
The disturbing nickname given to Muehlberg came from the manner in which the women’s bodies were discarded. Instead of leaving his victims openly exposed, he placed their remains inside or between objects such as mattresses, trash containers and a wooden dresser. These makeshift packages were abandoned beside roads or on public streets in different jurisdictions around the St. Louis metropolitan area. The unusual disposal methods led investigators to suspect that several apparently separate murders had been committed by the same person.
Muehlberg was not publicly identified as the Package Killer until 2022. By that time, he had already spent decades in prison for the 1993 murder of Kenneth “Doc” Atchison. Advances in DNA testing eventually allowed investigators to connect physical evidence from the earlier murders to Muehlberg. When questioned, he confessed to killing the four identified women and described another victim who remains unidentified.
The Known Victims
- Robyn J. Mihan, age 18 — disappeared March 22, 1990; body found March 26, 1990, near Silex, Lincoln County, Missouri: Mihan disappeared from the Cherokee Street area of south St. Louis. Her body was discovered four days later along a rural road near Silex, approximately 50 miles northwest of St. Louis. Her remains had been placed between two mattresses that were fastened together with wire. Because evidence indicates that she remained alive for part of the four-day period after her disappearance, her exact date of death has not been publicly established. Muehlberg later admitted abducting and killing her.
- Brenda Jean Pruitt, age 27 — last seen in early May 1990; reported missing May 9, 1990; body found October 4, 1990, in Maryland Heights, Missouri: Pruitt disappeared from St. Louis and remained missing for several months. Municipal workers discovered her body inside a 32-gallon plastic trash container near 12400 Basston Drive in Maryland Heights. Her remains were wrapped in plastic and bound with electrical cable. Investigators concluded that she had been strangled or smothered. Because her body was not located until months after she vanished, the exact date of her murder could not be determined.
- Donna Reitmeyer, age 40 — body found June 11, 1990, in St. Louis, Missouri: Reitmeyer’s body was found inside a rubber trash container on a sidewalk along Gasconade Street near South Broadway. Her remains had been wrapped in plastic garbage bags. Decomposition prevented the medical examiner from determining a precise cause or date of death, although authorities classified the case as a homicide. Reitmeyer was a mother of three daughters. Muehlberg ultimately admitted responsibility for her murder.
- Sandra “Sandy” Little, age 21 — disappeared September 4, 1990; body found February 17, 1991, near O’Fallon, St. Charles County, Missouri: Little vanished in September 1990 and remained missing for more than five months. Her skeletal remains were discovered inside a wooden dresser or dresser-like box abandoned near Interstate 70 outside O’Fallon. The condition of her remains made it impossible to establish an exact date or cause of death. Muehlberg pleaded guilty to killing her and received a life sentence for the crime.
- Unidentified woman — killed sometime in 1990 or 1991, reportedly in Bel-Ridge, Missouri: Muehlberg confessed to murdering an additional woman whom he said he picked up in south St. Louis. He claimed that he killed her at his residence and initially kept her body in a large cardboard box in his basement. When the box began deteriorating, he allegedly transferred the remains into a steel barrel. He said he later abandoned the barrel near a self-service car wash in the Berkeley or Pagedale area. Investigators found evidence that a barrel may have been discovered near a car wash years earlier, but its contents and present location could not be confirmed. The woman has never been identified, and her exact date of death remains unknown.
- Kenneth Murle “Doc” Atchison, age 57 — murdered February 8, 1993, in Bel-Ridge, Missouri: Atchison went to Muehlberg’s home to complete a vehicle transaction involving a Cadillac, his Chrysler LeBaron and several thousand dollars in cash. He never returned. Weeks later, police found his body inside a homemade plywood coffin in Muehlberg’s basement. His hands had been restrained, and medical evidence showed that he had suffered multiple injuries before dying from asphyxiation. Muehlberg was convicted of Atchison’s murder in 1995.
The Disappearance and Murder of Robyn Mihan
Robyn Mihan was the first identified victim in the series that would eventually be attributed to the Package Killer. On March 22, 1990, she disappeared from the Cherokee Street corridor in south St. Louis. The area was known at the time for street-level prostitution and drug activity. Mihan, a young mother, was only 18 years old when she encountered Muehlberg.
Muehlberg later gave investigators a detailed confession concerning Mihan. He said he took her to his house in Bel-Ridge, where he assaulted and restrained her. According to his account, she was held inside the residence before he strangled her. Investigators believe she may have remained alive for several days after her disappearance, although the precise sequence and timing could not be independently reconstructed after so many years.
On March 26, a passerby found two mattresses beside a road near Silex. The mattresses had been wired together, concealing Mihan’s body between them. The discovery was particularly disturbing because it demonstrated an effort to package and transport the victim rather than simply abandon her where she had been killed.
The Murder of Brenda Jean Pruitt
Brenda Pruitt disappeared in early May 1990. Her family reported her missing on May 9 after losing contact with her. For months, there was no clear indication of what had happened. On October 4, 1990, workers cutting weeds and collecting roadside trash in Maryland Heights noticed a plastic trash container lying in the grass near Basston Drive.
Inside the container, authorities found Pruitt’s body. She had been wrapped in plastic and restrained with electrical cable. The type of cable used in the crime became an important investigative clue because similar material had been used to secure the mattresses containing Mihan’s body. The repeated use of plastic coverings, containers and construction-related materials strengthened the theory that one offender was responsible for both murders.
Pruitt was not immediately identified. Investigators later confirmed her identity through identifying records. Medical evidence indicated that she had been strangled or smothered, but the passage of time prevented officials from assigning a precise date to her death.
The Murder of Donna Reitmeyer
Donna Reitmeyer was found on June 11, 1990, only a few months after Mihan’s body was discovered. Her remains had been placed inside a rubber trash can and left on a sidewalk near Gasconade Street and South Broadway in St. Louis. The disposal location was more urban and visible than the rural site where Mihan had been found, but the packaging method was unmistakably similar.
Reitmeyer’s body was badly decomposed, making it impossible for the medical examiner to establish exactly how or when she had died. Despite the absence of a definitive medical cause, investigators determined that she had been murdered. She was 40 years old and had three daughters.
For decades, Reitmeyer’s family knew that she had been the victim of a homicide but did not know who had killed her. Muehlberg’s identification and guilty plea finally established legal responsibility for her death more than 30 years after her body was found.
The Murder of Sandy Little
Sandra “Sandy” Little disappeared on September 4, 1990. She was 21 years old and the mother of a young son. Unlike some of the other women linked to the Package Killer investigation, accounts of Little’s life did not establish that she regularly worked as a prostitute. Her personal history reportedly included periods in foster care and unstable living arrangements.
Little remained missing through the remainder of 1990. On February 17, 1991, her remains were discovered inside a wooden dresser or box discarded near Interstate 70 in the O’Fallon area. The body had deteriorated to skeletal remains, preventing investigators from establishing an exact cause or date of death.
Evidence recovered from Little’s remains was compared with material from the other cases. Investigators noted similarities in how her body had been enclosed and transported. Animal hair was also recovered in more than one case. Muehlberg later acknowledged that he had a dog in his residence during the period when the women were killed.
The Unidentified Fifth Woman
During his interviews with investigators, Muehlberg claimed that the four known women were not his only female victims. He described picking up another young woman in south St. Louis during 1990 or 1991 and taking her to his Bel-Ridge home. He said that he killed her and kept her remains in his basement longer than those of his other victims.
According to Muehlberg, he initially placed the woman’s body inside an oversized cardboard box. As decomposition damaged the container, he obtained a steel barrel and transferred the remains into it. He claimed that he transported the barrel to an area near a self-service car wash and left it there.
Detectives attempted to verify this account. People associated with local car washes recalled that a barrel had once been found near one of the properties, and a former police officer confirmed that such an item had been reported. However, no surviving record conclusively established what was inside the barrel or what happened to it afterward. Without recoverable remains, investigators have been unable to identify the woman or determine whether every detail of Muehlberg’s confession was accurate.
The Murder of Kenneth “Doc” Atchison
Muehlberg’s eventual capture did not result from the murders of the women. Instead, it followed the disappearance of Kenneth “Doc” Atchison in February 1993. Atchison knew Muehlberg and had discussed purchasing or trading for a Cadillac that Muehlberg was offering. On February 8, Atchison traveled to Muehlberg’s Bel-Ridge house with his Chrysler LeBaron and several thousand dollars in cash.
Atchison was never seen alive again. Because he had told relatives and acquaintances about the transaction, suspicion quickly moved toward Muehlberg. A man who knew Muehlberg later contacted police with alarming information. He reported seeing a coffin-shaped plywood container in Muehlberg’s basement, with what appeared to be a pair of socks protruding from it. Muehlberg had reportedly sought help moving the heavy box from the basement.
Police obtained a warrant and searched the residence. Inside the basement, they found Atchison’s body enclosed in a crudely constructed wooden coffin. His hands had been restrained. The autopsy revealed extensive violence, including stab wounds and gunshot injuries, although asphyxiation was determined to be the fatal mechanism.
Muehlberg fled Missouri before officers could arrest him at the house. He was captured in Wayne County, Illinois, on March 27, 1993. Prosecutors argued that he killed Atchison to obtain his cash and vehicle. A jury convicted Muehlberg of first-degree murder in 1995, and he was sentenced to life imprisonment without the possibility of parole.
The Decades-Long Package Killer Investigation
Although investigators suspected that Mihan, Pruitt, Reitmeyer and Little had been killed by the same offender, the evidence available during the early 1990s did not identify him. The victims had been found in different cities and counties, requiring cooperation among several police departments, medical examiners and prosecutors.
The offender’s method of disposing of the bodies provided the most visible connection. Each woman had been enclosed in a household or industrial object before being abandoned. Electrical cable, plastic bags and other materials suggested that the killer had access to tools and supplies associated with repair or construction work. Muehlberg had experience performing maintenance, repair and construction-related jobs, but his name did not emerge as the central suspect during the original investigation.
The cases eventually became cold. Evidence was preserved, however, allowing detectives to revisit the murders as forensic science improved. Investigators formally renewed their work on the cases in 2008 and later submitted evidence for advanced DNA testing.
DNA Identification and Confession
In 2022, DNA evidence connected Muehlberg to at least one of the Package Killer crime scenes. Because he was already incarcerated for Atchison’s murder, investigators knew where to find him and could compare the genetic evidence directly with his profile.
Detectives interviewed Muehlberg in prison. He admitted responsibility for the murders of Robyn Mihan, Brenda Pruitt, Donna Reitmeyer and Sandy Little. His descriptions included disposal locations and details that had not been widely known. He also confessed to the unidentified fifth woman, though authorities were unable to locate her remains.
Prosecutors in the different Missouri jurisdictions coordinated their cases. Because Muehlberg was already serving a life sentence and was reportedly experiencing serious health problems, authorities agreed not to seek the death penalty in exchange for his cooperation and guilty pleas.
Guilty Pleas and Life Sentences
In March 2023, Muehlberg pleaded guilty in a series of court hearings to the murders of the four identified women. Each case resulted in another life sentence without the possibility of parole. The sentences were ordered to run alongside the life term he was already serving for killing Kenneth Atchison.
The pleas brought formal legal conclusions to murders that had remained unsolved for more than three decades. For the families of the women, the proceedings finally established the identity of the man responsible. The outcome could not restore the years lost to uncertainty, but it ended speculation over whether the Package Killer would ever be named.
Legacy of the Case
Gary Randall Muehlberg’s crimes illustrate how a killer can remain unidentified even while serving prison time for another murder. For nearly 30 years, he was known publicly only as the man convicted of killing Kenneth Atchison. The earlier deaths of four women remained separate cold cases connected mainly by their unusual disposal methods.
The investigation also demonstrates the importance of preserving physical evidence. Material collected in 1990 and 1991 ultimately provided the scientific connection that detectives had been unable to establish using the technology available at the time. Once the DNA evidence identified Muehlberg, investigators were able to obtain confessions and resolve cases that had haunted several families and police departments for decades.
At least five people are legally recognized as Muehlberg’s murder victims: Robyn Mihan, Brenda Jean Pruitt, Donna Reitmeyer, Sandy Little and Kenneth “Doc” Atchison. His confession concerning an unidentified woman raises the likely total to six. Until her remains are located or her identity is established, a final part of the Package Killer investigation remains unresolved.
