Updated 5:30 p.m. — Prince William police found no bomb at Unity Reed High School after someone threatened to bring an explosive to the school at 8820 Rixlew Lane, near Manassas Mall, just before 1 p.m. today.
The school division placed Unity Reed (formerly Stonewall Jackson Senior High School) into secure the building mode, meaning no one enters or exits. After police called all-clear, officers assisted in dismissing students.