The suspect shot and killed himself, police said.

Two police officers were shot and killed in McAllen, Texas, on Saturday night, according to officials. The shooting took place as the officers were responding to a call at a home and came under fire.

“What I’m trying to tell you is the officers never had a chance to suspect a deadly assault on them,” McAllen Police Chief Victor Rodriguez said at a press conference.

The suspect shot himself and died as other officers arrived on the scene, Rodriguez said. He was told to drop the gun, but instead shot himself.

Officers Edelmiro Garza, 45, and Ismael Chavez, 39, were both killed. Garza had been on the force for about nine years, while Chavez had been employed by McAllen for about 2 1/2 years.

Both officers were pronounced dead at a local hospital.

The suspect, identified as Aldon Caramillo, 23, had a history of arrests. His previous charges included driving under the influence, fleeing from officers, assault and marijuana possession, Rodriguez said.

“These are difficult moments, Rodriguez said. “The officers came here to maintain peace. Instead, they were taken down by gunfire.”

“The next few days for us will be very, very difficult,” he added.

McAllen is located in southernmost Texas, along the Mexican border.

“I cannot tell you how many calls I’ve taken, or missed, in the last couple hours,” Rodriguez said. Gov. Greg Abbott sent his prayers to the officers and their families in a call, Rodriguez said.

The officers were not wearing body cameras and Rodriguez said he does not believe the dash camera in the officers’ car would have picked up the shooting as it was parked away from the home.

Rodriguez said there was still much they did not know about the incident and the investigation will continue.

“Our department and our officers stand by each other. … Together we’re strong and I think that’s what will help us through these next few weeks,” Rodriguez said.