Three police officers were killed two more wounded while serving a warrant in Pennsylvania Wednesday afternoon.

The shooter is also dead, Pennsylvania State Police Commissioner Col. Christopher Paris said at a news conference.

The two wounded officers are in critical but stable condition, Paris said.

“This kind of violence isn’t okay,” Pennsylvania Gov. Josh Shapiro said. “We need to do better as a society. We need to help the people that think that picking up a gun, picking up a weapon, is the answer to resolving disputes. We need to do better when it comes to mental health. We need to do better when it comes to looking out for those in need so we don’t have to deal with tragedies like this.”

WellSpan York hospital said that it was treating two people connected with the shooting, WHP reported.

York County Public Information Officer Ted Czech said earlier that initial calls from North Codorus Township came in about incident shortly after 2 p.m. and that officers from the Northern York County Regional Police Department and the York County Sheriff’s Office were involved in the shooting.

Paris said that more information would be released later by the district attorney’s office.

Witness Dave Miller told WGAL that he was driving home when he had to make way for police.

“I looked over to the right, of course, and I saw the police in the barn, looked like they were looking for someone,” he told the station. “And then I heard the gunshots ring, and I saw people on the ground.”

Miller said he heard about 30 shots.

“It was just continuous,” he said. “Lots of shots, more than what I could count.”

Schools in the area were shut down and residents told to shelter in place, but those orders were later lifted.