JUST IN: White House Placed on Lockdown by Secret Service After Vehicle Crashes at Lafayette Park – Man in Custody After Reportedly Fighting With Secret Service and National Guard

Car crashes into signpost at Lafayette Square Park (screenshot via Martin Austermuhle/Washington Sun)

The White House was locked down, with reporters being told to remain in the briefing room after an apparent security incident when a man rammed his car into a sign at Lafayette Square Park, just north of the White...