Three police officers were fatally shot and two others injured while serving a warrant before the gunman killed himself, authorities in York County said Sept. 17.
Gov. Josh Shapiro went to the scene after the tragedy.
"This is an absolutely tragic and devastating day," Shapiro told reporters. "We grieve for the loss of life for the three precious souls who served this commonwealth, served this county and this county."
Shapiro also asked that people keep in mind the families of the victims of the shooting.
"I hope, as this community comes together, that we think not just about those who wear the uniform, but those behind them," Shapiro said. "These families are extraordinary and I hope you'll join me in prayer for them."