Officers said they were called to East Street shortly before 10pm, where a 25-year-old man from Tadworth, Surrey, had suffered a single stab wound to his back. He was taken by ambulance to the Royal Sussex County Hospital for treatment, and discharged from hospital the next day, police said. The suspect is described by police as a black man, 6 foot and aged in his mid-20s. He had his hair tied back into two buns and wore a grey hooded top. Anyone who was in the area at the time or recognises the man in the CCTV image is asked to contact police online or call 101 quoting serial 1480 of 27/05. Alternatively, call Crimestoppers anonymously on 0800 555 111.