Updated

Police have ordered passengers out of Washington's Union Station while officers investigate a report of a suspicious package.

Metro police tweeted that they are assisting Amtrak police in investigating the package, which was reported Wednesday afternoon. A District of Columbia police spokesman says city officers are also on the scene.

Thousands of commuters and train passengers were waiting outside the station amid a swarm of police cars.

Commuter rail services to Maryland and Virginia reported that all trains were being held at the station.

Metro said its trains were still stopping at the station.