On November 21, 2016, the body of Ammon Brown was discovered by a UTA railroad employee in a wooded area adjacent to the railroad tracks, just south of 1640 South Provo. A second railroad employee approached Ammon's body, thinking Ammon had passed out or was sleeping, as a black sweatshirt was draped over his head. After trying to arouse Ammon without success, the worker moved the sweatshirt and discovered injuries to Ammon's neck and face.
Ammon's death was determined to be a homicide due to the deep lacerations and blunt force trauma to his head and face and a near decapitation laceration to Ammon's throat. Additionally, droplets of blood were located several feet from the body. Through witness interviews and surveillance footage, it was discovered that Ammon Brown was with two other males at the Food and Care Coalition in Provo at 1:30 p.m. on the date of the murder.
On November 22, UTA Police came in contact with Enmanuel De Paz and a 16-year-old juvenile. Later that same day, UTA Police reviewed surveillance video and discovered that Enmanuel De Paz, Ammon Brown, and the juvenile traveled from Salt Lake City on the FrontRunner train. Approximately 20 minutes later, they were captured on video at the Food and Care Coalition. UTA video later showed that only two males, sans Ammon Brown, boarded the train at the Provo Station at 3:23 p.m. on the same date and headed north to Salt Lake City. At a McDonald's restaurant in Salt Lake City, De Paz went to the restroom with his backpack and when he exited the bathroom, he had changed his shirt (by rotating it underneath the other shirts he had on) and pants.
On November 23, UTA Police made contact with Enmanuel De Paz, who was wearing many of the same items of clothing and carrying the same backpack he had on November 21. Inside the backpack, officers found a knife (which belonged to Ammon Brown) and a hatchet. Officers also learned that Enmanuel De Paz carried an orange-handled machete and had it in his possession on November 21. Neither De Paz's orange-handled machete or pants were ever found.
On June 8, 2018, Enmanuel De Paz pleaded guilty to Manslaughter (a second-degree felony), Possession of a Dangerous Weapon by a Restricted Person (a third-degree felony), Possession of a Forged Document-ID (a third-degree felony), and Obstructing Justice (a third-degree felony). The Honorable Judge Darold J. McDade, of the Fourth District Court, ordered that the manslaughter, weapon, and obstruction charges be served consecutively to each other and the forged document charge be served concurrently to the other charges. Consequently, Enmanuel De Paz will serve a term of 3-25 years at the Utah State Prison.