NORTH CODORUS TOWNSHIP, Pa. -- Three police officers were fatally shot and two wounded Wednesday in York County, Pennsylvania , and the shooter was killed by police, authorities said.

The officers were at the scene, amid rolling farmland, to follow up on a domestic-related investigation that began the previous day.

"This is an absolutely tragic and devastating day," Gov. Josh Shapiro said. "We grieve the loss of life of three precious souls who served this county, who served this Commonwealth, who served this country."

"This kind of violence is not OK. We need to do better as a society," Shapiro said at a news conference.

It was one of the deadliest days for Pennsylvania police this century. In 2009, three Pittsburgh officers responding to a domestic disturbance were ambushed and

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