Eric Frein, PA police ambush suspect, spotted near school - officials

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, Lt. Col. George Bivens said the sighting happened on Friday night near Pocono Mountain East High School.

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

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 eluded capture for more than a month despite an intense manhunt in the heavily wooded area around his parents' home in Canadensis.

He is charged in the Sept. 12 shooting that killed one trooper and wounded another. He is described by police as a survivalist with a grudge against law enforcement.

The Associated Press contributed to this report.