Authorities are investigating a suspicious vehicle near the Pentagon this morning.
Update, 11:30 a.m.: All roads around the pentagon have been reopened.
Authorities now believe that the man they have in custody acted alone, and there were not other people involved in the incident overnight near the Pentagon North Parking lot.
The person being detained was in possession of a backpack that contained "a suspicious item, a suspicious non-explosive material," according to an FBI spokesperson. "It's going to require further testing.
The man, who has not been identified is being detained, but he has not as yet been charged.
Original story: One person has been taken into custody, according to a Pentagon Police spokesperson, and authorities are saying there could be more people involved.
A bomb squad from the Arlington County Fire Department is investigating the vehicle, according to U.S. Park Police spokesperson David Schlosser.
Schlosser says that authorities "had someone that was considered suspicious in Arlington Cemetery overnight." The man was initially observed by members of the Fort Myer police force. He was taken into custody around 5 a.m.
In the process of interviewing this person, police believed it was appropriate to look for a vehicle, a red 2011 Nissan, this person may have been operating, according to Schlosser. Arlington County police found the vehicle near the Pentagon's north parking lot, and because of its proximity to the Pentagon police thought it was necessary to investigate it.
Right now, the ramp off Interstate 395 northbound to Washington Boulevard is closed, as is Route 110 in both directions, and Route 66 east around Route 110.
Officials are not saying when the roads may be re-opened, noting only that they won't be cleared "until it's safe."
This story will be updated.
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