Carlos Sepulveda-Montes, a young Hispanic man, disappeared with two companions, Rocio Banuelos-Bustamante, 29, and Zamir Sanchez-Hernandez, 35, after they were last seen together in Salt Lake County on March 28, 2022. Family concern led to missing-person reports by April, and a June anonymous call warned that Rocio had been killed and buried in the mountains, shifting the inquiry toward homicide.

Investigators traced leads to 26-year-old Cesar Matias Sevilla-Aleman, known on the street as Taliban. Cellphone records placed him near Rush Valley in Tooele County around the time of the disappearances. In April 2023 cadaver dogs training near the Mercur Trailhead found human remains later identified by DNA, fingerprints, and tattoos as Carlos, Rocio, and Zamir. A witness told police that Sevilla-Aleman, angry over a reported $2,400 drug debt Carlos owed, took the three to a remote mountain spot, shot them, and buried them in a shallow grave.

Anyone with information about the victims, their associates, or movements around March 28, 2022, is asked to come forward.