Summary based on the NamUs case record (MP162958)
Mario Peralta Illescas was 54 years old when he disappeared from Los Angeles, California, with official missing-person records listing January 1, 2014, as his date of last contact. A Hispanic/Latino man, Mario had family members living in Guatemala who remained connected to him despite the distance between them. The known circumstances surrounding his disappearance are unusually limited: his family reported that they last heard from Mario sometime in 2014, after which communication abruptly stopped. There is no publicly documented account describing where in Los Angeles he was staying, what he was doing around the time contact ended, or whether he had discussed plans to travel elsewhere. What began as a loss of communication with relatives thousands of miles away eventually became a long-term disappearance with few publicly available clues explaining what happened to him.
Mario was described as approximately 5 feet 5 inches tall and weighing about 150 pounds, with black hair and brown eyes. Public case information does not list identifying scars, tattoos, other distinctive physical characteristics, or details about the clothing he may have been wearing when he was last known to be in contact with his family. There is likewise no vehicle associated with his disappearance and no publicly listed information about transportation he might have been using. These gaps make the passage of time particularly significant. Without a documented final destination, confirmed sighting, vehicle, or detailed timeline of his movements, investigators are left with a broad starting point centered on Los Angeles and the knowledge that his relatives in Guatemala stopped hearing from him during 2014.
The case eventually came under the responsibility of the Los Angeles Police Department's Adult Missing Persons Unit. Records list LAPD case number 26177980 and show the disappearance was formally reported to the department on September 10, 2026, more than a decade after Mario's last known contact with his family. The missing-person record was subsequently entered into the national missing-person system in September 2026, allowing information about Mario to be available for comparison with other investigative records. A relative has also assisted with the forensic side of the investigation: Mario's sister, Miriam Peralta Illescas, provided personal items for DNA-related comparison purposes, with the submission associated with the California Department of Justice's Jan Bashinski DNA Laboratory. The availability of a family reference sample or suitable personal items can provide investigators with another avenue for comparison should unidentified remains or other relevant forensic evidence become associated with the case.
Despite the years that have passed, the central mystery remains the same as it was when Mario's family first realized something was wrong. They knew he was in the Los Angeles area and had remained in communication with them from the United States, but sometime in 2014 those contacts ended and no publicly documented explanation followed. Available records do not describe evidence of foul play, an accident, a voluntary departure, hospitalization, incarceration, travel outside the country, or any other circumstance that would explain the sudden and lasting silence. There are also no publicly documented sightings after his disappearance that establish where he may have gone. Mario Peralta Illescas's case is therefore a long-term missing-person investigation built around a painfully small amount of information: a 54-year-old man living in or around Los Angeles, relatives in Guatemala who last heard from him in 2014, and a family that was ultimately left without answers when that communication stopped. More than a decade later, the effort to determine what became of Mario depends on connecting those limited historical details, the information preserved by investigators, and available forensic evidence with any credible information that may finally explain where he went after his last contact with his family.Last Seen: Jan 1, 2014
