Police have launched a murder investigation after a Lithuanian man stabbed in Dungannon died from his injuries.
Audrius Aukstuolis, 29, was attacked in the town around midday on Wednesday.
The suspect is said to be 5ft 6in with slim to medium build and dark hair. He was wearing a dark-coloured jacket.
Detectives are appealing for anyone who was in Anne Street or Iris Street at the time of the incident to contact them.