A man lurking suspiciously overnight in Arlington National Cemetery was arrested by U.S. Park Police. Several major roads are currently closed near the Pentagon.

A suspicious vehicle was found Friday morning in the bushes near the Pentagon.

It was unclear whether the vehicle contained explosive devices or suspicious materials, according to Park Police. The bomb squad was examining the vehicle.

Law enforcement authorities have rendered the device safe at 8:10 a.m., according to WRC-TV.

The department of Homeland Security took one person linked to the vehicle into custody, suspecting him of planting suspicious devices around the Pentagon.

The man remains in custody at Park Place, but his identity or any pending charges against him have not been revealed. Sgt. David Schlosser of the Park Police said the man was not cooperative with police officers, and that he could not address several news reports that an explosive device was found in the man's vehicle or that one or two other suspects fled the scene, a Politico report said.

Later in the morning, an unidentified source of ABC News suggested that the man had a backpack that contained what officials believe is ammonium nitrate, spent 9mm shells and written material with statements such as: al qaeda taliban rules. ABC reported that the man seemed to be a U.S. citizen of Ethiopian ethnicity.

Roads in the area - I-66, Route 110, ramps to and from I-395, and Washington Boulevard - were shut down during the investigation assisted by the FBI. After extensive closures of the roads around the Pentagon, the traffic is slowly being recovered.

Earlier this week, a motorist found with a gun and a suspicious package near the Pentagon was taken into custody.