Detectives are looking to trace a man in connection with a witness intimidation investigation.
Essex Police want to speak to Sheldon Mackay, 22, who is 5ft 10ins and often goes under the alias of Sheldon Fletcher.
He is known to frequent Colchester, particularly around Monkwick and Highwoods.
Mackay is also known around Ipswich.
Anyone with information is asked to call Colchester police on 101 or Crimestoppers anonymously on 0800 55 111.
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