Two men have been stabbed at a central London Tube station within 24 hours in attacks that police believe are connected.
British Transport Police were called to Oxford Circus station at 03:40 BST on Saturday and just after 01:30 BST on Sunday to reports of serious assaults.
A 23-year-old man was taken to hospital with stab injuries on Saturday morning and a 41-year-old was found injured on Sunday and also taken to hospital.
Police are appealing for witnesses and have released an image of a man they want to talk to. No arrests have been made.
While they did not specify where in the station the stabbings occurred, the Night Tube service runs through Oxford Circus on the Victoria and Central lines at weekends.
Neither victim’s injuries are “life changing or threatening”, police said.
DCI Gareth Davies said: “There is absolutely no place for violence on the rail network, and detectives are working at pace to investigate these two connected incidents.
“Passengers will see an increased police presence at the station while officers carry out their enquiries.
“We are urging anyone who was in the area at the time and may have seen these incidents take place or events leading up to, to get in touch and assist us with our enquiries.
“Any piece of information might be vital for our investigation.”
