Update at 7:35 p.m. — The man has been safely taken into police custody. The scene is now being cleared.

Update at 6:10 p.m. — Police are still attempting to talk and negotiate with the man. A SWAT team is now reportedly on scene.

Police are blocking either side of the Key Bridge due to a person threatening to jump.

A man is hanging on to the southeast side of the bridge and threatening to jump, according to scanner traffic and witnesses. We’re told that a helicopter and a Coast Guard boat are assisting police, who are trying to talk with the man.

D.C. and Arlington police have shut down vehicle and pedestrian traffic to the bridge. Inbound traffic from Arlington is being diverted onto Lee Highway and the George Washington Parkway.

Significant traffic backups have been reported in Rosslyn, particularly at the intersection of Lynn Street and Wilson Blvd. Earlier, police looked into reports of motorists getting out of their cars and yelling obscenities at each other as a result of the backups.

If you or someone you know is experiencing thoughts of suicide, help is a phone call away. Call Crisis Link at 703-527-4077.

Hat tip to @Agent_Greg