The search is focusing on a three-state area around northeast
Pennsylvania, Trooper Connie Devens of the Pennsylvania State Police
said on Sunday afternoon.
The shooting occurred outside a state police barracks in Blooming
Grove, Pennsylvania, about 11 p.m. on Friday, authorities have said.
The barracks are about 100 miles (161 km) north of Philadelphia.
Devens denied media reports that investigators now think the suspect
left the immediate area of the shooting but had no further comment.
On Sunday, the Times-Tribune of Scranton, Pennsylvania, posted a
video on its website showing police searching deep woods near the
barracks for evidence in the case.
"It seems to be an attack on law enforcement and our form of
government," Pennsylvania State Police Commissioner Frank Noonan
said during a news conference on Saturday.
With the shooter still on the loose, officers fanned out across
Pennsylvania, New York and New Jersey in a manhunt, Noonan said.
"I know a lot of people are wondering if the threat is resolved. It
is not," he said. "The individual who perpetrated this heinous crime
is still at large."
Noonan, who added that more than one suspect might have been
involved, said police do not have a description or any information
on who committed the attack.
On Saturday morning, police interviewed a man described as a person
of interest, Devens said. She said he was not under arrest and no
further details were immediately available.
Noonan said that anyone interviewed at this stage of the
investigation was not necessarily a suspect.
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He said the troopers were ambushed but would not share details of
the incident because it was still under investigation.
Noonan identified the slain trooper as Corporal Bryon Dickson.
Trooper Alex Douglass, who was wounded in the ambush, underwent
surgery at a hospital and was reported in critical but stable
Blooming Grove is a township of roughly 5,000 people near the New
York state border.
Pennsylvania Governor Tom Corbett in a statement called on the
public to be vigilant as law enforcement officers conduct a search
for anyone who was involved in the attack.
"Every attack on an officer of the law is an attack on our state,
our country and civilized society," he said.
(Reporting by Kevin Murphy in Kansas City, Missouri; Editing by
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