Two men were stabbed in a row outside a bar in central London, police said.
The victims, aged 23 and 25, were knifed by a man in Old Street following an argument in the early hours of the morning.
Police and paramedics raced to the scene where the men were treated for stab injuries before being taken to hospital. The suspect fled the scene.
Detectives have now issued a CCTV image of a man they want in connection with the attack as well as an appeal for witnesses after the incident at about 5am on Saturday October 1.
The suspect is described as a black man in his early to mid-20s, about 5ft 9inches tall and of muscular build. He wore dark clothing.
The victims have recovered from their injuries and been discharged from hospital.
Anyone with information is asked to contact Hackney CID on 101 or Crimestoppers anonymously on 0800 555 111 or visit crimestoppers-uk.org.
