A CCTV image of a man police are desperate to find has been released.
Noel Haruna has been missing since he was last seen in Colchester on Sunday, October 22.
The 25-year-old was last spotted in the area of East Street and East Hill in the city centre.
A spokesman for Essex Police said officers remain "concerned" for Mr Haruna's welfare.
He has been described as around 6ft and 3ins tall, of slim build, and was last seen wearing a denim jacket with white fur, a black jumper, black trousers and black trainers.
The CCTV image is of Mr Haruna in the vicinity of East Hill at about 4am on Sunday.
Chief Inspector Ella Latham said: “Our focus continues to be on Colchester, particularly the areas in the vicinity of East Hill, where Noel was last seen on Sunday.
“My officers are continuing our enquiries to find him, but our concern for his welfare continues to grow.
“I urge the community in Colchester to take a good look at his image and consider whether they may have seen Noel.
“I would particularly call on dog walkers or anyone out and about in Colchester in the early hours of Sunday 22 October to recall where they were and whether they saw anyone matching his description.
“Any piece of information, no matter how small, could prove pivotal.”
Anyone with any information is being asked to contact Essex Police quoting the incident number 528 of Tuesday, October 24.
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