A fight between two rival groups at an unsanctioned car show late on Friday night led to a huge shootout that killed three people and injured at least 15 others in Las Cruces, N.M., the police said.

About 200 people were at the show at Young Park when gunfire erupted around 10:10 p.m., the police said at a news conference on Saturday. The shooting involved handguns and resulted in the discharge of as many as 60 rounds, officials said.

No arrests had been made as of Saturday afternoon. The police said the shooting began between two groups that had ill will toward each other though the nature of the dispute was unknown.

Among those killed were three males, two 19-year-olds and a 16-year-old, the police said. The people who were injured were 16 to 36 years old. At the news conference, officials revised the total number of injured from earlier reports.

While the circumstances of the shooting in Las Cruces remain unclear, New Mexico has struggled in recent years with violent crime.Credit…Paul Ratje for The New York Times

Of those wounded, seven patients were sent to the University Medical Center of El Paso in Texas. Four others were treated and discharged from hospitals, and the conditions of another four receiving treatment were unclear, Michael Daniels, the Las Cruces fire chief, said at the news conference.

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