A south London Tube station was placed on lockdown by police on Sunday morning after a man was stabbed.
Police rushed to Vauxhall station at 5.20am after reports someone had been knifed inside.
British Transport Police said a man had received injuries to his leg in the attack.
A spokesman said the stab injuries were only minor and he had already been released from hospital.
The incident meant part of the station remained closed on Sunday morning as police combed the scene.
A man, 35, was arrested nearby and is currently being quizzed by police.
A spokesman for British Transport Police said: “Officers were called to Vauxhall Underground station at 5.19am this morning after reports that a man had been stabbed.
“He received minor injuries to his leg and has since been released from hospital.
“A 35-year-old man was arrested away from the station a short time later and is currently in police custody.
“Part of the station remains closed this morning as we carry out our investigation.”
