Updated

Schools in a northeastern Pennsylvania district have reopened after authorities did a precautionary search to make sure they weren't harboring Eric Frein, the suspect in last month's deadly ambush of a state police barracks.

The Pocono Mountain School District was closed Tuesday while police searched the district's campus in Swiftwater. Police scoured the elementary, junior and high school buildings but found no sign of the 31-year-old suspect, Eric Frein.

The district says additional police officers will be on hand Wednesday, and students will remain indoors. Athletic practices and games will take place off-site.

Police say there have been two reported sightings of Frein in near the Swiftwater campus.

Frein is charged with opening fire outside the Blooming Grove state police barracks on Sept. 12, killing one trooper and injuring another.