An unknown person fatally shot three police officers and wounded two more Wednesday afternoon in York County, according to Pennsylvania State Police Col. Christopher Paris.
There is no active threat to the community, according to Paris, and the shooter was killed by law enforcement.
York County District Attorney Tim Barker will release more information this evening, Paris said.
Law enforcement officers were at the property to follow up on a "domestic-related" investigation that began Tuesday, Paris said. He said police are not releasing more details because they are obtaining and serving more search warrants.
"There are no words I can offer to assuage the grief the community experiences," Paris said. "We stand here united. We will not rest until we've conducted a full, fair, competent and thorough investigation into this matter."
Paris delivered the information at a news conference hosted in an auditorium on the first floor of WellSpan York Hospital. The room was lined with law enforcement and medical personnel.
The shooting, which occurred at around 2:10 p.m., stemmed from a warrant service on Haar Road in North Codorus Township in York County, according to NBC10.
Pennsylvania Gov. Josh Shapiro lamented the tragedy of the shooting, and referred to the fatal shooting of Officer Andrew Duarte who was killed in February by a stray projectile while responding to a hostage situation at York Memorial Hospital.
Shapiro shared that U.S. Attorney General Pam Bondi reached out to him and offered the federal government's support in the investigation.
"This is an absolutely tragic and devastating day for York County and the entire commonwealth of Pennsylvania," Shapiro said.
"We need to help the people who think that picking up a gun, picking up a weapon, is the answer to resolving disputes," Shapiro said. "We need to do better when it comes to mental health, and dealing with those in need.
"We have to do better as a society," Shapiro said.
A log of 911 calls describes the incident as "officer down," with a "signal 13," which means officer in trouble. Officers needed medical transport, according to dispatch logs, with a medivac helicopter and ambulances sent to the scene.
At least two officers were transported with multiple gunshot wounds, according to dispatch logs.
Officers were keeping people well back from the scene in the area's rolling farmland, with some 30 police vehicles blocking off roads bordered by a barn, a goat farm and soybean and corn fields.
The incident resulted in a temporary shelter-in-place order within the Spring Grove School District. Students have since been driven home by school buses.
Michelle Baughman with the York County District Attorney's office said Wednesday afternoon, "We will come forth with information at an appropriate time; however, now is not that time."
Pennsylvania Lt. Gov. Austin Davis, in a social media post, said, "Please send prayers to the officers and those involved in the shooting in York County."
The Consulate of Mexico in Philadelphia said in a social media post that they were "monitoring the incident" in Pennsylvania and advised Mexican residents nearby to follow official instructions.
A spokesperson for the Mexican consulate in Philadelphia said the post was "only a precautionary alert for our community.