A Massachusetts high school was on lockdown as authorities investigated a suspicious device that was found Sunday evening, and now authorities are searching for a suspect.
Framingham police say they responded to Framingham High School for a reported explosion just after 6 p.m.
According to police, it was initially thought to be fireworks in a container, left by the front doors of the high school.
The device appeared to have detonated, and the remnants located were in the form of black powder inside a PVC pipe. No other devices were located.
The case is being investigated by state police and ATF officials.
The scene is all clear Monday morning.