<p>An armed individual tried to breach the Federal Bureau of Investigation's building in Cincinnati, Ohio, early on Thursday before fleeing, the FBI said, calling it a "critical incident."</p>.<p>"At approximately 9 AM this morning an armed subject attempted to breach the Visitor Screening Facility at FBI Cincinnati. After an alarm and a response by FBI special agents, the subject fled north onto Interstate 71," the FBI field office in Cincinnati wrote on Twitter.</p>.<p>An NBC affiliate quoted Clinton County Emergency Management Agency officials as saying law enforcement exchanged shots with the male subject described as wearing a gray shirt and body armor.</p>.<p>The affiliate said the police shut down two highways and imposed an area lockdown.</p>
<p>An armed individual tried to breach the Federal Bureau of Investigation's building in Cincinnati, Ohio, early on Thursday before fleeing, the FBI said, calling it a "critical incident."</p>.<p>"At approximately 9 AM this morning an armed subject attempted to breach the Visitor Screening Facility at FBI Cincinnati. After an alarm and a response by FBI special agents, the subject fled north onto Interstate 71," the FBI field office in Cincinnati wrote on Twitter.</p>.<p>An NBC affiliate quoted Clinton County Emergency Management Agency officials as saying law enforcement exchanged shots with the male subject described as wearing a gray shirt and body armor.</p>.<p>The affiliate said the police shut down two highways and imposed an area lockdown.</p>