Technicians carrying maintenance equipment that was mistaken for a gun sparked a partial evacuation and large police response to a Schaumburg office complex Tuesday morning, authorities said.
Police were called to the complex at 150 N. Martingale Road about 10:50 a.m. in response to reports of a suspicious man with a gun. There was no indication of shots fired and police found no firearm or anyone injured, Schaumburg police Sgt. Christy Lindhurst said.
A review of surveillance footage confirmed that the original report was incorrect and there never was a threat, she added.
Nonetheless, Lindhurst said the error doesn't change the department's advice that "if you see something, say something."
All procedures during the investigation worked as they were intended, Lindhurst added. Police left the scene about 12:30 p.m.
Some businesses chose to evacuate during the investigation, others sheltered employees in place.