We want to speak to this man, who may be a key witness in our investigation into the murder of 45-year-old Grimsby man Tony Richardson.
Mr Richardson died in hospital following an assault at around 4.15pm on Tuesday, outside the Halifax Bank in Old Market Place, Grimsby.
Detective Chief Inspector Stewart Miller said: “There’s no suggestion that this man was involved in the incident that led to Mr Richardson’s death.
“However, he was in the area shortly before it happened and may be able to provide us with vital information, so we would be very grateful if they could get in touch.
“This is one of a number of new lines of enquiry we are investigating and I want to thank the public for their help so far in coming forward with information.
“Our initial investigations have lead us to believe this attack was not targeted at any specific section of the community and we have increased our patrols to provide reassurance to people living and working in the area.”
We are also still appealing for information that could help us identify a man we want to speak to in connection with the assault.
He is described as white, aged 20-45 years old, with dark rimmed glasses.
He wore a beige or grey waist-length jacket with a peaked hood, which was up. He also wore dark trousers and grey or brown trainers.
If you believe you can help, or you were in the Market Place area between 3.30pm and 5pm on Tuesday evening, please call our dedicated incident room on 01472 290204.
Alternatively, call 101 quoting log number 372 of January 15 or Crimestoppers anonymously, on 0800 555 111.