Seth Ator and the 2019 Midland-Odessa Mass Shooting
Overview
On August 31, 2019, 36-year-old Seth Aaron Ator carried out a prolonged mass shooting across Midland County and Odessa, Texas. Rather than attacking a single building, Ator traveled through highways, commercial districts, residential streets, and parking lots while firing at motorists, pedestrians, families, and law-enforcement officers. Seven victims were killed, more than twenty people were wounded or otherwise injured, and Ator was eventually shot and killed by police near the Cinergy entertainment complex in Odessa.
The violence began during a routine traffic stop on Interstate 20 and developed into a mobile shooting spree that extended for approximately an hour. Ator initially drove a gold Toyota Camry and later murdered a United States Postal Service employee before stealing her mail vehicle. The moving attack created confusion throughout Midland and Odessa because reports of shootings were arriving from numerous locations and witnesses described two different vehicles.
Events Before the Shooting
Earlier on August 31, Ator had been involved in a dispute connected to his employment with Journey Oilfield Services. He was fired that morning after becoming angry during a work-related confrontation. Police records later indicated that both the company and Ator contacted authorities. Ator reportedly made disorganized allegations that people were stalking, abducting, and persecuting him.
Ator also contacted a national law-enforcement tip line shortly before the shooting began. Federal investigators described the call as rambling but said he did not clearly announce an imminent attack during that conversation. Authorities were attempting to identify and locate the caller when the first gunfire was reported.
The Interstate 20 Traffic Stop
At approximately 3:17 p.m. on August 31, Texas Department of Public Safety troopers attempted to stop Ator on Interstate 20 between Midland and Odessa after he failed to properly signal a turn. Before his vehicle came to a complete stop, Ator raised an AR-15-style semiautomatic rifle and fired through the rear window of his car toward the patrol vehicle.
Trooper Chuck Pryor was wounded in the attack. Another trooper returned fire, but Ator escaped before officers could establish control of the scene. He continued along Interstate 20, firing into vehicles occupied by people who had no apparent connection to him. Several motorists were struck, and two of the eventual fatalities occurred during the highway portion of the attack.
The Shooting Spree Through Odessa
After leaving Interstate 20, Ator traveled through Odessa using East Loop 338, State Highway 191, East 42nd Street, John Ben Shepperd Parkway, and surrounding roads. He repeatedly fired through the windows of his moving vehicle and sometimes slowed or stopped before shooting at people nearby.
At a car dealership, Ator approached a family standing outside and opened fire. Fifteen-year-old Leilah Hernandez was fatally wounded, while her older brother Nathan was shot as he tried to protect her. Ator then continued onto East 42nd Street, where he fired into additional vehicles. Among the wounded was 17-month-old Anderson Davis, who suffered injuries to her face, mouth, chest, and teeth but survived.
Ator continued through residential and commercial areas, shooting at vehicles and people in parking lots. Some victims were attacked while sitting at traffic lights or driving home. Others were struck while standing outside or investigating the sound of gunfire. The apparently indiscriminate selection of victims made it difficult for authorities to predict his direction or identify a single destination.
Murder of Postal Worker Mary Granados
On Adams Avenue in Odessa, Ator encountered 29-year-old postal carrier Mary Granados near the end of her work shift. Granados was inside a white United States Postal Service vehicle when Ator fired at her. She was speaking by telephone with her twin sister when the attack occurred.
Ator killed Granados, removed her from the vehicle, and transferred belongings from his damaged Toyota into the postal van. He then abandoned his original car and continued the shooting spree in the stolen mail vehicle. Reports involving both the Toyota and the postal van initially caused authorities to fear that more than one shooter might be involved.
Final Attacks and Police Pursuit
Driving the stolen postal van, Ator moved through neighborhoods and fired toward a residence near East 38th Street and Walnut Avenue. Edwin Peregrino had gone outside his parents' Odessa home after hearing gunfire. Ator shot and killed him, and another member of the family was wounded.
Ator later fired at additional motorists on East Yukon Road, Faudree Road, and State Highway 191. Joseph Griffith was killed while sitting in a vehicle with his wife and children. Other victims, including truck drivers and workers traveling through the area, were attacked without warning.
Police officers from multiple agencies converged on the Cinergy entertainment complex after locating the stolen postal van. Ator drove toward a police barricade, and an officer used a patrol vehicle to collide with the van and prevent him from breaking through. Ator exchanged gunfire with officers from inside or near the disabled vehicle.
The confrontation ended at approximately 4:17 p.m. to 4:20 p.m. Ator was struck repeatedly by police gunfire and died at the scene. Odessa Police Officer James Santana and Midland Police Officer Zack Owens were among the officers wounded during the wider response. The attack had lasted roughly one hour and extended across a large portion of the Midland-Odessa area.
Victims Killed on August 31, 2019
- Leilah Hernandez, 15 – Killed outside a car dealership near State Highway 191 in Odessa. She was an Odessa High School student and was standing with family members when Ator opened fire. Her brother was wounded while attempting to shield her.
- Mary Granados, 29 – Killed on or near Adams Avenue in Odessa while working as a United States Postal Service letter carrier. Ator stole her postal vehicle and used it during the remainder of the attack.
- Edwin Peregrino, 25 – Killed outside his parents' home in an Odessa residential neighborhood near East 38th Street and Walnut Avenue. He had gone outside after hearing gunshots.
- Joseph Griffith, 40 – Killed while sitting in a vehicle with his wife and children at a traffic light in Odessa. Griffith had previously worked as a mathematics teacher.
- Rodolfo “Rudy” Arco, 57 – Killed while traveling in his truck in the Midland-Odessa area. Arco was a trucking-company owner who had moved from Las Vegas to West Texas.
- Raul Garcia, 35 – Killed while driving through the Midland-Odessa area. Garcia was an El Paso-based long-distance truck driver and father of four who was returning home after working away for several weeks.
- Kameron Brown, 30 – Killed in Odessa while inside a company pickup truck. Brown was a United States Army veteran and an employee of Standard Safety & Supply.
People Wounded
More than twenty people suffered gunshot wounds, injuries from shattered glass, or other trauma during the rampage. The wounded included Trooper Chuck Pryor, Midland Police Officer Zack Owens, Odessa Police Officer James Santana, 17-month-old Anderson Davis, Leilah Hernandez's brother Nathan, and numerous motorists who were attacked along Interstate 20 and Odessa streets.
Some survivors were struck directly by bullets, while others were cut by vehicle glass shattered by gunfire. Emergency rooms in the area treated victims with injuries ranging from minor wounds to critical trauma. The number and geographic spread of the injured reflected the unusual mobile nature of the attack.
Weapon and Firearm Investigation
Ator used an Anderson Manufacturing AM-15, an AR-15-style semiautomatic rifle. Investigators determined that he had previously attempted to purchase a firearm from a licensed dealer in 2014 but was denied after failing the federal background-check process because of information associated with his mental-health history.
The rifle used in the massacre was later traced to an unlawful private manufacturing and sales operation. A Lubbock-area man admitted that he had manufactured and sold firearms without the required federal license. The investigation concluded that Ator obtained the rifle through a private transaction that avoided the normal background check conducted by licensed firearm dealers.
Ator's Background
Seth Aaron Ator was born on September 17, 1982. He had attended school in Lorena, Texas, before later enrolling in a GED program and taking classes at McLennan Community College. In 2001, he was arrested after an incident involving trespassing, evading arrest, and allegations that he had attempted to enter a woman's bedroom. He later pleaded guilty to charges connected to that case.
At the time of the mass shooting, Ator lived alone in a basic structure west of Odessa. Neighbors described him as angry, confrontational, and unpredictable. At least one neighbor reported seeing him carrying a large rifle during an earlier dispute.
Motive
Investigators did not identify a single political, racial, religious, or ideological motive for the attack. Ator's dismissal from work occurred shortly before the shooting and appeared to contribute to his emotional state, but authorities did not conclude that the victims were connected to his employer or specifically selected because of the workplace dispute.
Evidence showed that Ator had expressed paranoid beliefs and believed that unnamed groups were stalking or persecuting him. However, investigators cautioned against reducing the massacre to one explanation. The available evidence indicated that he acted alone and selected most of his victims opportunistically as he traveled through the area.
Aftermath
The Midland-Odessa attack occurred less than one month after the August 3, 2019, mass shooting at a Walmart in El Paso, Texas. The close timing of the two Texas massacres intensified public debate concerning firearm background checks, private gun sales, emergency warning systems, mental-health intervention, and law-enforcement responses to mobile attackers.
Memorial services were held for the seven victims, and community organizations raised funds for injured survivors and bereaved families. The Bright Star Memorial was later established at the University of Texas Permian Basin to honor those killed and affected by the attack.
The massacre remains one of the most destructive mobile shooting attacks in Texas history. Its impact extended far beyond a single crime scene, leaving victims and evidence scattered across highways, intersections, businesses, and residential neighborhoods throughout Midland and Odessa.
