The lockdown at Marietta Public Schools has been lifted.

The district went on lockdown at 2:45 p.m., after an unverified threat and students remained in their classrooms until shortly after 4 p.m. Students are being released slowly and buses will run approximately an hour later than they normally would. Cynthia O’Connor, the superintendent’s secretary, said parents were notified of the situation by robocall.   

“We are releasing students to parents as they come in, then releasing them as they’re cleared to leave” O’Connor said.

O’Connor said the district is not sure of the exact nature of the threat at this time. Marietta Police Department were at the scene during the lockdown.

“The safety of our students is our number one priority,” O’Connor said.