A Tube station was emptied after football fans making a beeline for Wembley Stadium set off a smoke bomb and fire cautions, Transport for London (TfL) has said.
An onlooker said Charing Cross underground station “loaded with smoke” at around 15:20 BST.
One individual has been captured in connection to the episode, British Transport Police said.
The station was shut for more than thirty minutes until the smoke cleared.
Allie Elwell, who was in the station at the time, said there were “cops all around”.
She said: “It was frenzy. There were fans singing and cheering down the passage.
“We turned the corner and could notice smoke. Fans appeared to simply overlook everything, as yet singing and striking against the side of the elevator.
“Before long, there was declaration on the PA to clear because of a crisis. We bounced on one of the last Tubes.”
Precious stone Palace play Manchester United in the FA Cup last at Wembley later.
The territory is presently protected and the flame cautions have been reset, with the station reviving just before 16:00
TfL did not say which gathering of fans were mindful.