SALT LAKE CITY, Utah — South Jordan Police have identified a third adult male involved in online communications with missing 15-year-old Alisa Petrov, who disappeared from American Fork on April 21, 2025. Authorities have revealed that 41-year-old Samuel Mitchell of Herriman, Utah, was engaged in private Discord conversations with the teen in the weeks leading up to her disappearance. According to a search warrant obtained by 2News, investigators uncovered the disturbing messages between Mitchell and Petrov after discovering a hidden iPad in the teen’s bedroom. The warrant was issued specifically for Mitchell’s phone. “The last message sent from the juvenile to…