Threat investigation prompts lockdown at Potomac High School in Dumfries

DUMFRIES, Va. - A threat investigation has prompted a lockdown at Potomac High School in Prince William County.

School officials posted to the announcement on Twitter at 12:17 p.m.

Potomac High School is located in Dumfries and is home to approximately 2,000 students.

This is a developing story. Stay with us for updates.