Kyles Acosta, a 26-year-old American Indian/Alaska Native man from Sells, Arizona, was last known to have had contact with authorities on December 31, 2024. His missing-person record identifies Sells, in Pima County and within the Tohono O’odham Nation, as his last known location. Acosta is described as approximately 5 feet 8 inches tall and weighing about 185 pounds, with black hair and brown eyes.
His case is listed publicly through the National Missing and Unidentified Persons System and an independent Native missing-persons resource has also identified him as missing from Arizona since 2024.
The circumstances surrounding Acosta’s disappearance remained unclear for a considerable period of time. According to information provided to investigators, his sister contacted the Tohono O’odham Nation Police Department on May 26, 2026, after realizing that she had not seen or heard from her brother for approximately two years. She had been living in Tucson and had only recently returned to the Tohono O’odham Nation. After coming back to the community, she learned from other relatives that they, too, had not seen Acosta for roughly the same length of time. The subsequent review of local police records found that Acosta’s last documented police contact was on December 31, 2024. This established the final known point in the available official timeline, but it did not establish where Acosta went afterward or what circumstances led to the loss of contact.
The case presents a significant gap between the last documented contact and the eventual report to police. There is no publicly available information establishing an exact date on which Acosta disappeared, and the available records do not describe a specific incident that explains his absence. The investigating agency's information states that no details were available concerning the clothing or hairstyle he may have had when he was last seen. No transportation information, clothing or accessories, documents, distinctive physical features, or other circumstances of disappearance are publicly listed in the available case record. The absence of those details leaves investigators and the public with relatively few known circumstances from which to reconstruct his movements after his last confirmed contact.
Acosta is enrolled with the Tohono O’odham Nation of Arizona, and the missing-person record identifies both his primary residence and his disappearance as connected to tribal land. The Tohono O’odham Nation Police Department is the investigating agency, with the case reported in Sells. Public information identifies Detective Mike Rivas as the listed law-enforcement contact associated with the investigation. The case was subsequently entered into NamUs under case number MP159185 and remains publicly published as a missing-person case. The available public record does not provide information indicating that Acosta was located, nor does it establish what may have happened to him after his last known contact.
For Acosta’s family, the circumstances are especially difficult because his absence apparently went unrecognized by some relatives for an extended period while family members were living in different places. His sister’s return to the Tohono O’odham Nation ultimately brought the prolonged lack of contact to the attention of police, prompting a review of available records and the creation of the missing-person case. Publicly available information does not describe searches, sightings, recovered property, suspected locations, or other investigative developments that would clarify his whereabouts. Consequently, the known history remains limited to his last documented contact, the later discovery by relatives that he had been absent for an extended period, and the resulting law-enforcement investigation.
As publicly documented, the case of Kyles Acosta centers on a 26-year-old Tohono O’odham man whose last known contact occurred in Sells, Arizona, on December 31, 2024, followed by a prolonged period in which family members were unable to account for his whereabouts. His sister reported the absence to the Tohono O’odham Nation Police Department in May 2026 after returning to the Nation and learning that other relatives had also not seen or heard from him. With no publicly established disappearance date, no reported explanation for his absence, and few available details about his last known circumstances, Acosta’s case remains a deeply concerning unresolved search for information about where he went and what became of him.Last Seen: Dec 31, 2024
