Trisha Marie Beristain was 19 when she was found shot to death in Big Cottonwood Canyon in the early hours of November 18, 1998. She had been shot multiple times, described as execution-style with a 9mm handgun. Trisha had gone out the evening before with a man she knew as Jesse Vega and had plans to meet her father for breakfast the next morning; her father later recognized her from a news report about the unidentified woman.

Investigators determined the boyfriend’s real name was Arturo Munguia and concluded jealousy over Trisha’s friendship with another man was the motive. Munguia and an accomplice, Diego Cruz Silva, fled the state after the killing. Silva was arrested in June 1999 and confessed, saying he was with the couple the night Trisha was driven to Big Cottonwood Canyon and shot by Munguia. A warrant was issued for Munguia, who remained at large.

Does anyone have information about Munguia’s whereabouts in late 1998 or contacts who might help investigators locate him?