Update at 11:55 a.m. — News outlets have identified the man who was taken into custody as Yonathan Melaku of Alexandria. Melaku is a Marine Corps reservist, according to Fox News.
Update at 11:00 a.m. — The scene has been cleared and all roads around the Pentagon have reopened.
(Updated at 10:55 a.m.) A man has been taken into custody after he fled from police who observed him in Arlington National Cemetery around 1:30 a.m., the FBI said this morning.
The man, who is in his 20s, had a backpack containing materials that police found suspicious, according to Brenda Heck of the FBI’s Washington Field Office. Those materials were found in bags within the backpack, but have since been determined to be non-explosive. Heck says authorities are still performing tests on the materials.
A police interview of the man led officers to a suspicious vehicle near the Pentagon. A search by the Arlington County bomb squad revealed nothing suspicious in the vehicle (pictured above, being towed from the scene), Heck said. She added that no suspicious ‘devices’ have been found.
Authorities are now saying that they believe the man “acted alone,” despite earlier reports that one or two people were being sought by police. Police are still not confirming details about the suspect — reported to be a naturalized U.S. citizen from Ethiopia — except to say that he was uncooperative with investigators.
Washington Boulevard is still closed between Columbia Pike and Route 110. Route 110, which was closed earlier this morning, has reopened. Arlington National Cemetery was closed this morning while law enforcement agencies conducted their investigation but has also since reopened.