Child, 1, who died in Homestead was left inside car for about 8 hours, police say

The White House is locked down Monday morning after a driver crashed into a security barrier in Lafayette Park.

Someone jumped over a White House security barrier at a different location at about the same time, and investigators are trying to determine if the two are connected, a source familiar with the investigation said.

Secret Service agents ordered journalists to stay in the briefing room in the West Wing.

Video shot by Martin Austermuhle of The Washington Sun shows a smoking silver sedan on a brick walkway just north of the White House.

Secret Service officers appear to talk with the driver as National Guard troops stand by.

“Get on the ground!” someone is heard shouting as the driver clashes with officers.

The suspect was detained and the situation is contained, a law enforcement official told NBC News. It wasn’t immediately clear why the driver crashed.

The person who jumped a security barrier did so a short walk away, at Pennsylvania Avenue and 17th Street, a source said.

Stay with NBC Washington for more details on this developing story.

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