EL PASO, Texas (KTSM) — Police say two people are in custody after three people were killed and 15 others injured in a shooting at a park in Las Cruces, New Mexico, on Friday.

Police and fire crews arrived just after 10 p.m. Friday to a chaotic scene at the desert city’s Young Park, where an unauthorized car show had drawn about 200 people, police said in a news conference. Gunshot victims ranging in age from 16 to 36 were treated there or taken to hospitals.

The dead were identified as 16-year-old Andrew Madrid, 18-year-old Jason Gomez, and 19-year-old Dominick Estrada, police said. Madrid and Gomez died at the scene while Estrada died from his injuries at the hospital.

Las Cruces Fire Chief Michael Daniels said 11 patients were sent to three local hospitals or to the University Medical Center of El Paso, the regional trauma center. As of Saturday, he said, seven victims were in El Paso, four had been treated and released and the conditions of the other four were not known.

Between 50 and 60 handgun casings were scattered across a wide swath of the park, Police Chief Jeremy Story said, suggesting multiple shooters and multiple weapons among two groups whose “ill will” toward each other are believed to have led to the shootings. Several others were injured in the crossfire, he said.

Las Cruces Police say 20-year-old Tomas Rivas and a 17-year-old boy, who is not being identified due to his juvenile status, have been taken into custody over their alleged involvement.

Both are charged with three open counts of murder, according to an announcement from police. Additional charges are pending.

Rivas will be booked into the Dona Ana County Detention Center where he will initially be held without bond. The juvenile will be remanded to the juvenile detention facility.

Young Park remained closed as of Saturday night as police continued gathering evidence from the scene. Nearby roads also remain closed to through traffic. Police did not say when they would reopen.

Law enforcement partners are continuing their investigation and are actively following multiple leads. LCPD is receiving assistance from the FBI, the Bureau of Alcohol, Tobacco, Firearms and Explosives, New Mexico State Police, the Third Judicial District Attorney’s Office, and the U.S. Attorney’s Office.

The Community Foundation of Southern New Mexico has established a fundraising initiative to help victims and their families. Information on the Las Cruces Crisis Action Fund can be found by clicking here.

Las Cruces sits on the edge of the Chihuahuan Desert along the Rio Grande in southern New Mexico, about 40 miles from the U.S.-Mexico border.

The Associated Press contributed to this report.