Denver Police are looking for several suspects after three people were killed Friday night at a home in Park Hill in what police said Saturday afternoon was likely a “drug deal gone extremely bad.”

Police said they received a call about a shooting on the 3600 block of Hudson Street at 8:13 p.m. Friday. When they arrived, they found a man outside with a gunshot wound to the arm, and then discovered two dead people inside the home.

The man with the gunshot wound to the arm was transported to the hospital and remains in serious condition, said Denver police spokesman Tyrone Campbell.

A fourth victim was transported to the hospital by a private party, said Sonny Jackson, a Denver police spokesman. That person later died.

The block of Hudson Street is lined by duplexes and multifamily homes with well-manicured lawns. People were walking their dogs Saturday morning and slowing to look at crime scene technicians still working in the area.

The victims have not been identified, but Jackson said he believed they are all adult men. Campbell said it is unclear if the men all lived in the home or not, and would not release details about what drug may have been involved.

“We don’t believe it to be gang-related at this time,” Jackson said.

Police initially said they were looking for multiple suspects, according to information they released on Twitter. By Saturday afternoon, Campbell said police are looking for a 2015 or newer, maroon, Chevy Tahoe with temporary tags that may be traveling out of state.

“We are looking for a person or persons of interest,” Campbell said. “Anyone tied to that vehicle.”

Campbell said police are still looking for more witnesses or anyone who may have information about the shooting, and encouraged anyone with information to call 911.

Saturday morning, neighbors said the block is usually quiet, despite being a few blocks away from Holly Square.

“In all situations we’re always asking our community to be vigilant,” Campbell said. “But this appears to be an arranged encounter.”