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Just hours after Monday’s shooting rampage at the Washington Navy Yard, a man threw some firecrackers over the fence at the White House.

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Witnesses say they sounded like gunshots.

Uniformed Secret Service officers tackled the man within seconds, handcuffed him and arrested him.

The White House was locked down as a precaution. It was reopened an hour later.

Police identified the man as Alexander Sahaghan; charges are pending.