FARMINGTON, N.M. — At least three people are dead and several others, including two police officers, were injured before a teenage suspect was shot and killed in a New Mexico community, authorities said Monday.

Around 11 a.m., four police officers responded to “multiple calls” of gunshots in Farmington, New Mexico, a city of more than 45,000 people about 200 miles north of Albuquerque. Police Deputy Chief Baric Crum said the officers found and fatally shot the 18-year-old shooter, killing him.

The chief said it was a “chaotic scene” as the suspect had shot and killed three other people before police confronted him.  

“Besides the suspect himself, who is deceased, there were nine other people injured,” Crum said. Police are trying to determine why he was in the neighborhood, the chief added. He did not identify the suspect and he didn’t know any of the victims’ ages. 

Farmington Police Chief Steve Hebbe said in a video statement that it appeared the gunman had no specific target, but rather roamed through a quarter mile of the neighborhood firing at least three different weapons including what Hebbe described as an “AR style” rifle.

Monday’s incident in New Mexico is the 225th mass shooting in the U.S. so far this year, according to the Gun Violence Archive, which defines a mass shooting as an incident in which four or more people are shot or killed, not including the shooter.

The shooting led to “preventative lockdowns” of the Farmington Municipal Schools at the request of police, the school district said. The lockdowns were lifted Monday afternoon.

San Juan Regional Medical Center, where victims were taken for medical care, was also locked down during the “crisis,” according to statement from the hospital, as an incident command center was put in place to organize the facility’s response.