After Navy Yard attack, D.C. goes on high alert

Ruth Anne Arnum

On high alert for suspicious activity

A boy with toy gun poses for picture in front of barricades at the police headquarters in the eastern Ukrainian town of Slaviansk, April 17, 2014. Russian President Vladimir Putin said on Thursday that Ukraine's government needs to provide guarantees to its Russian-speaking population in the east of the country to resolve the crisis.   REUTERS/Gleb Garanich  (UKRAINE - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)

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More than 10 hours after the shooting began Monday at the Washington Navy Yard, a man threw firecrackers over the north fence of the White House.

Ruth Anne Arnum, a tourist from Shoreham, N.Y., said she saw the man with a blue camouflage backpack pull up on a blue bicycle and throw a firecracker over the fence.

“Somebody screamed, ‘Who threw that!’ and he did it again,” Arnum said. Within seconds, three law enforcement officials pounced on the man. Several other officers drew their weapons, she said.

“With all the things that go on these days, it was scary,” Arnum said.

Following the shooting Monday morning, law enforcement officials increased their protection of many of the institutions in the nation’s capital. In the afternoon, the Capitol complex was locked down or partially locked down for several hours. And the Nationals postponed their night game to Tuesday, partially because of safety concerns.

Brian Leary, a spokesman for the U.S. Secret Service, confirmed that a man threw at least two firecrackers over the White House fence from Pennsylvania Avenue. He said a suspect was in custody.

— Fredrick Kunkle and Maria Glod

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