EL PASO, Texas (KTSM) — A third person has been arrested in connection with a New Mexico shooting that left three people dead and 15 others injured late Friday. Police in Las Cruces confirmed Sunday morning that 20-year-old Tomas Rivas and a 17-year-old boy had been taken into custody over thei r alleged involvement. Late Sunday afternoon, police reported that a third person, another 17-year-old boy, had also been arrested. Both 17-year-olds are not being identified due to their juvenile status but police say they and Rivas are facing open counts of murder with additional charges pending. Rivas will be booked into the Dona Ana County Detention Center where he will initially be held without bond. The juveniles will be remanded to the juvenile detention facility. PREVIOUS COVERAGE: 3 killed, 15 injured in shooting at park in Las Cruces Police and fire crews arrived just after 10 p.m. Friday to a chaotic scene at Young Park in Las Cruces, 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. Crime scene tape blocks off Young Park after Friday night's fatal shooting in Las Cruces, N.M., on Saturday, March 22, 2025. (Chancey Bush/The Albuquerque Journal via AP)Las Cruces police investigate Friday night's fatal shooting that occurred at Young Park in Las Cruces, N.M., on Saturday, March 22, 2025. (Chancey Bush/The Albuquerque Journal via AP)Evidence markers are shown in the parking lot at Young Park after Friday night's fatal shooting in Las Cruces, N.M., on Saturday, March 22, 2025. (Chancey Bush/The Albuquerque Journal via AP)Crime scene technicians investigate the parking lot at Young Park after Friday night's fatal shooting in Las Cruces, N.M., on Saturday, March 22, 2025. (Chancey Bush/The Albuquerque Journal via AP)Crime scene technicians look over the Young Park parking lot after a mass shooting overnight, Saturday, March 22, 2025 in Las Cruces, N.M. (Justin Garcia/The Albuquerque Journal via AP) 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. ...read more read less