Officials were on the subway at 6.47pm on Friday Called Green Park Station in central London and a man was arrested in connection with the incident.
One user wrote on Twitter claiming: “My daughter was on the train for 50 minutes with no announcements while the train was in the tunnel stopped and the passengers were scared. ”
Another described“ alarms and the long wait for the police to arrive ”and added,“ I was and am scared. ”
BTP Superintendent Mark Lawrie tweeted: “The station was closed due to an incident in the #greenpark, but will be reopened shortly.