The call came in before 2:30 p.m. Thursday from the Arts Academy at Benjamin Rush School.
Action News has learned the school in the 11000 block of Knights Road was evacuated.
Video from Chopper 6 showed firefighters and police outside the school near a large crane.
No further details about the incident were released.
Stay with Action News and 6abc.com for more information as it becomes available.
------
Send a News Tip to Action News
Learn More About 6abc Apps