Detectives investigating the murder of a Polish worker are trying to trace this man.

Police want to identify him after he was recorded on camera in a bank at the same time Marek Pudlowski staggered in seriously injured.

The 51-year-old unemployed agricultural labourer was found dead on a park bench in Waterloo Square, near Bognor Pier, five hours later.

CCTV footage showed Mr Pudlowski going into an HSBC branch in High Street, Bognor, at 11.40am on August 3.

Police believe he had already suffered the serious injuries to his upper body which later led to his death.

They have been unable to identify the man in this image, who they believe was looking in Mr Pudlowski’s direction while he was in the bank.

Detective Chief Inspector Steve Johns, who is leading the Sussex Police major crime branch investigation, said: "This is a man who was in the HSBC bank on the day Marek was killed, at the same time as Marek.

"We have been unable to identify him so far during the course of our inquiries and we'd like him to come forward so that we can try and eliminate him from the investigation."

Last week police offered a £5,000 reward for information leading to the arrest and conviction of Mr Pudlowski’s killer.

The appeal was followed by the arrest of a 33-year-old Polish man, who was later released on police bail.

Anyone with information, or who recognises the man in the picture, 0845 6070999, quoting Operation Langton, or call Crimestoppers anonymously on 0800 555111.