This story is developing and will be updated.
A 25-year-old man was working as a driver for people with disabilities when three men he had left alone in his van were found dead — and he’s now been charged with murder.
Isaiah Pulu was charged Friday in the deaths, which authorities suspect were caused by carbon monoxide poisoning.
The three men who died on Feb. 6 were identified by West Valley City police as Colton Moser, 25; Mosa’ati Moa, 22; and Tim Jones, 39. They were residents of three different group homes in West Valley City, authorities said in a post on the social media platform X.
Pulu was working works for Safe and Sound Services, a business that transports people with disabilities, state records show.
Salt Lake County District Attorney Sim Gill’s office alleged in charging documents that Pulu showed a “depraved difference of human life” and engaged in conduct that created a “grave risk of death,” which led to the deaths of the three mens.
On Friday, Gill pointed to a previous discipline history where Pulu had been reprimanded at work for leaving clients alone — which the district attorney said shows that Pulu knew what his responsibility was.
(Fox13) Emergency responders investigate a scene in West Valley City on Friday, Feb. 6, 2026, after three disabled men were found dead in a transportation vehicle.
“It helps us establish he was aware of the vulnerability,” he said, “and he was warned about that.”
According to charging documents, Safe and Sound had reprimanded Pulu a month earlier, on Jan. 6, for client abandonment after he left three clients unsupervised for thirty minutes. Pulu signed and acknowledged the warning that day.
Gill would not say whether those three clients were the same men who died on Feb. 6. Safe and Sound Services did not respond to a request for comment after the men were found dead.
Police responded to a West Valley City apartment complex after Pulu called 911 that day, according to charging documents.
The three men were “dependent on caretakers for their daily needs,” prosecutors said in the documents, and Pulu was their assigned caregiver on Feb. 6.
After Pulu picked up the three men, the documents said, he was supposed to take them on an outing at a “community location,” such as a park or mall, the CEO of Safe and Sound Services told investigators.
Instead, Pulu took the three men for a drive because one of them was “being rowdy,” charging documents state, adding that Pulu drove around with the men for 30 to 45 minutes before he decided to go home.
He told investigators that he was trained to use “isolation and de-escalation,” so he parked the van in his garage at 10 a.m., and told one of the men to stay in the car with the others and that he’d return later.
Pulu told authorities he left the van running with the windows down and garage door open, and that he took the garage door opener with him.
He also said there was a button on the wall to open and close the garage door, charging documents state.
“I just wanted to get some food and watch my show,” Pulu told investigators, according to charging documents.
When Pulu returned 3.5 hours later, the garage door was closed and the vehicle was off and would not start, according to arrest documents.
All three passengers were unresponsive and were declared dead at the scene from what police then said appeared to be accidental carbon monoxide poisoning.
(Fox13) Emergency responders investigate a scene in West Valley City on Friday, Feb. 6, 2026, after three disabled men were found dead in a transportation vehicle.
Safe and Sound Services has been licensed for nearly three years, and is approved to serve a maximum of 62 clients. In the handful of inspections that licensers have done since the company opened, they haven’t found any major issues.
It is licensed as a day program, which generally means the company helps provide daytime supervision and support for those who are disabled.
The state Department of Health and Human Services took emergency action against Safe and Sound Services on Feb. 6, prohibiting the company from taking new clients for the next 30 days and ordering that all staff must be retrained on safe practices regarding transportation and supervision of clients. It must also comply with increased monitoring and a licensing investigation.
The department said in an emergency notice that it was taking these measures to “protect the immediate health and safety of remaining clients” after the three men died.