Police are appealing for information after Tube passengers were allegedly threatened by a man with a knife at Vauxhall station.
Three members of the public were targeted, British Transport Police said.
A man has been arrested in connection with the incident, which happened at about 5am on May 11, but officers are now urging witnesses to come forward.
In a statement, the force said: “Initially, a 21-year-old man from London was ejected from Lightbox nightclub in South Lambeth Place.
“He then left the area but allegedly returned with a knife and threatened the club’s doormen.
“He is then reported to have travelled to the entrance of Vauxhall station where he threatened three members of the public with the knife.
“Officers attended and arrested the suspect after searching the wider area. He was searched and no knife was found.”
The man has since been released on bail until June 5, with conditions not to enter the railway or visit Vauxhall station or Lightbox nightclub.
The force said it especially wants to speak to anyone who saw a knife being “procured near the nightclub or disposed of in the area”.
Anyone with information is asked to call British Transport Police on 0800 40 50 40, quoting reference 108 of May 11, 2019. Alternatively, call Crimestoppers anonymously on 0800 555 111.
