Police: Eric Frein possibly spotted near school

CANADENSIS, Pa -- Pennsylvania State Police say a sighting of accused cop killer Eric Frein near a school is being treated as 'Highly Credible.'

In a news conference on Saturday afternoon, Col. George Bivens said the sighting happened on Friday night near Pocono Mountain East High School.

"In this particular case, this was a very close-up sighting," Bivens said at a news briefing alongside Gov. Tom Corbett. "The individual that reported it had great detail, and so our investigators believe that this was likely Frein."

The person was possibly carrying a rifle and had mud on his face.

Col. Bivens also said blood has been found in the search and is being tested for a possible connection to Frein.

Police are now focusing the manhunt, slightly south in the Paradise and Poconos areas.

Frein has alluded hundreds of officers who have been tracking him for more than a month. He is charged in the Sept. 12 shooting that killed Cpl. Bryon Dickson and wounded Trooper Alex Douglass, who was transferred from a hospital to a rehabilitation facility on Friday.

Gov. Corbett thanked residents for their patience and other police agencies for their help in the Erin Frein search. He also vowed that state police would bring Frein to justice.

"We will not rest until we apprehend this individual," he said.

The Associated Press contributed to this report.