PITTSBURGH — Two Pennsylvania school districts have canceled classes due to threats made on social media.

The Apollo-Ridge School District announced on its school website Sunday it had learned of a threat sent to a student on social media. Police say the threat did not name a specific school in the district.

The district cancelled classes Monday out of an abundance of caution.

The Blackhawk School District also announced it is cancelling classes Monday due to an unrelated threat on social media. It says law enforcement is in the process of determining if the threat was credible.

Both school districts are located outside of Pittsburgh.