Officials: Training exercise, mistaken 911 call led to Wright-Patterson Air Force Base lockdown

DAYTON, Ohio — An Air Force base in Ohio says there was no "active shooter incident," hours after authorities responded to reports of a possible gunman. Wright-Patterson Air Force Base says via Twitter that base personnel remain safe. 

The base said the report occurred during a "normal, scheduled installation exercise" that included an active shooter scenario.

Security forces and other emergency responders had rushed Thursday to the hospital at Wright-Patterson near Dayton after dispatchers received a 911 call from someone who believed there was a "real world" incident on the base.  The incident was reported at the base medical center, where people were seen being escorted out of the building with their hands over their head, CBS affiliate WHIO reports. 

Security forces responded and cleared the hospital. In the process, a security team member fired at a locked door in an attempt to open it and continue the sweep of the building, according to a statement from the base.

An investigation determined there was no shooter in the building, the statement said.

Residents were being advised to stay away from the base, which is Ohio's largest single-site employer with more than 27,000 civilian employees and military personnel. The base was the site where the Dayton Peace Accords were finalized in 1995, an international peace agreement that ended the war in Bosnia.