Two men have been stabbed at the same train station within 24 hours, British Transport Police have said.
Police were called to Oxford Circus underground station at 3.40am on Saturday where they found a 23-year-old man with knife injuries.
At 1.30am on Sunday, officers were called to the central London Tube station again to find another man, 41, with stab wounds.
They were both taken to hospital for treatment but their current condition is unknown.
British Transport Police said the two incidents were connected and have released a photo of a man they believe could help them with their investigation.
No arrests have been made in connection with the two assaults, the force added.
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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.”
