Reported man with gun inside Schaumburg office building

An office building in northwest suburban Schaumburg was put on lockdown late Tuesday morning.

Police responding to a report of a man with a gun in the 200-block of Martingale Road are on the scene, securing a perimeter.

The business complex located at 200 N. Martingale Road is on lockdown while police investigate.

No shots have been fired, police said.