A 17-year-old Utah girl was found fatally shot at a house party over the weekend, in a case police are probing as “suspicious.”

The Unified Police Department received a 911 call Saturday around 10:20 p.m. claiming high school senior Kaylissa O’Leary accidentally shot herself at the bash in Taylorsville — but cops aren’t sure if that’s exactly what happened.

“We are investigating this as a suspicious death because we do not know exactly who had that gun,” Sgt. Melody Gray told Fox13 on Sunday. “We don’t know if she had it.”

“What led up to this? Was it indeed an accident? Was it intentional?” Gray asked. “We don’t know at this point.”

Most of the party-goers fled the home, so cops weren’t able to interview them, Gray said.

Detectives are looking for witnesses and awaiting an autopsy report.

The car O’Leary drove to the party, a blue 2010 Honda Civic, was initially missing. Police announced on Monday morning that the vehicle had been found, without providing any additional details.

The teen was a student at Copper Hills High School in West Jordan, Utah.