Students at a charter high school in Detroit were evacuated Friday after a bomb threat was reportedly phoned in and an unattended bookbag was found on the premises.

The scare happened Friday morning at the Life Skills Center of Metropolitan Detroit, a charter school for grades 9 to 12, according to MyFOXDetroit.com.

Police arrived on the scene and found the bag, which belonged to a student who wasn't in school Friday, the station said.

Authorities classified the bag as suspicious, and classes were let out for the day. Roads in the area also were closed.

Click here for more on this story from MyFOXDetroit.com.