The White House is currently on lockdown according to the Secret Service official Twitter.
North fence line of @WhiteHouse is closed due to suspicious activity, Uniformed Division is responding.
— U.S. Secret Service (@SecretService) November 3, 2017
In a separate tweet, the Secret Service also said a subject was in custody and the White House remained closed.
Update: subject is in custody, Lafayette Park & North Fence line along Penn. Ave. remain closed.
— U.S. Secret Service (@SecretService) November 3, 2017