ORLANDO, Fla. – A weekend house party in Orlando took a tragic twist when gunfire erupted, as reported by the local police department.

According to an arrest affidavit, authorities were alerted to the incident just before 5 a.m. on Sunday, taking place at a residence on Wren Street.

Upon arriving at the scene, officers discovered Cristian Avila Carcamo in the backyard, suffering from multiple gunshot wounds. He was quickly transported to the hospital, classified as a trauma alert, police stated.

Investigators revealed that the suspect, identified as 19-year-old Geraldo Diaz Guzman, had left the area in a white BMW before law enforcement’s arrival.

Detectives conducted interviews with both party attendees and residents, but found that none could identify the shooter or provide a motive for the attack.

In a related development, authorities disclosed that another individual with a gunshot injury was brought to a hospital by someone driving a white BMW.

But after heading to the hospital, officers found the white BMW in the parking lot, which matched the description of the suspect vehicle, the affidavit shows.

As such, police spoke with the driver, who claimed he had driven his friend Guzman to the hospital but didn’t detail how he’d been shot, investigators said.

Around this time, another man — identified as Santiago Erazo-Zelaya — had tried to retrieve the BMW, but officers realized he had an outstanding federal warrant in an unrelated case, so he was taken into custody, detectives revealed.

Officers then spoke with Carcamo, who appeared to be in “significant pain,” and they learned that he’d been drinking in the backyard while hanging out with a few other people — including a man named “Michael” who had hospitalized him in a fight months prior, the affidavit says.

At some point during the party, Michael reportedly left the backyard while looking at Carcamo “with disdain,” police said, though he later returned with Guzman.

“Avila stated Michael walked behind the bar area to grab a beer, at which time the unknown male walked directly toward him, produced a firearm, and began shooting,” the affidavit reads. “Avil was unable to state the exact number of gunshots but felt multiple rounds strike him as he fell to the ground.”

But as Carcamo fell, he grabbed a gun from on top of a nearby refrigerator, and he used it to shoot back at Guzman, police said.

As a result of the investigation, Guzman now faces a charge of attempted first-degree murder.

The full arrest affidavit can be found below: