Three people died and 15 others were injured after an altercation broke out at a park in the desert city of Las Cruces, New Mexico, police said Saturday. Police and fire crews arrived at just after 10 p.m. Friday onto a chaotic scene at the city’s Young Park, where an unauthorized car show had drawn about 200 people, police said during a news conference. Gunshot victims ranging in age from 16 to 36 were treated on the scene or sent to area hospitals. Between 50 and 60 shell casings — all from handguns — were found scattered across a wide swath of the large park, Las Cruces Police Chief Jeremy Story said, suggesting multiple shooters and multiple weapons within two groups whose “ill will” toward each other police believe led to the shootings. Several others were injured in the crossfire, he said. Those who died were two 19-year-old men and a 16-year-old boy. Their names and those of the other victims were not yet being released. Local police were being assisted in their investigation by New Mexico State Police, the Doña Ana County Sheriff’s Office, the FBI and the federal Bureau of Alcohol, Tobacco, Firearms and Explosives. Las Cruces Fire Chief Michael Daniels said seven patients were treated at the scene, including two who died, and 11 others were sent to three local hospitals or to the University Medical Center of El Paso, the regional trauma center. By Saturday, seven of the surviving victims were in El Paso, while four others had been treated and released and the four remaining victims’ conditions were not known, he said. Authorities continued to solicit videos and other tips from those in attendance as they worked to identify a suspect or suspects who carried out the attack.