Metro transit police say normal operations are resuming at Union Station after officers investigated a report of a suspicious package.
Transit police said in a tweet that all entrances to the station are reopening. Thousands of passengers had been ordered outside the station during Wednesday's rush hour.
Metro police said they were assisting Amtrak police in investigating the package, but did not elaborate. Amtrak police said in an email that authorities were investigating a bomb threat at the station.
Commuter rail services to Maryland and Virginia reported that all trains were being held at the station and major delays were likely.