Wright-Patterson Air Force Base (US), Sep 10 (AP) Ohio's Wright-Patterson Air Force Base was put on lockdown Thursday night to investigate reports of a shooter on the campus, according to the airbase.

Stacey Geiger, spokeswoman for the base, said a report of an active shooter came in at 9:25 pm shortly before midnight, Geiger said emergency responders were doing a second sweep of the grounds.

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A media briefing was expected.

The 88th Airbase Wing tweeted at about 10 p.m. that security was searching a building. Emergency crews were also responding to the reports at the National Air and Space Intelligence Center.

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All of our military and civilian employees are trained to quickly assess the situation and take appropriate action," the airbase said in a follow-up tweet.

The lockdown was announced over loudspeakers at the base, which is just east of Dayton, Ohio.

The airbase said it would provide more information when it's available. (AP)

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