Union Station was evacuated for about 75 minutes Sunday afternoon due to irritating chemical odors from a malfunctioning battery backup system, D.C. fire spokesman Pete Piringer said.
A security guard who discovered the malfunction at about 1:30 p.m. was transported from the scene, but no other injuries were reported and the station reopened at about 3 p.m., Piringer said.
Amtrak has resumed service, but slight delays were expected to continue through late afternoon.
Piringer did not know the purpose of the backup system, the Associated Press reported.
Metro subway service continued through the station, but passengers were not allowed to exit at Union Station.
Copyright AP - Associated Press
