A man has had his bike stolen during a robbery in Hatfield, after refusing to hand over his mobile phone to a gang of men.

The incident happened at around 9.40pm on Tuesday, August 13, when it is reported that a man was cycling past Hatfield Swimming Centre in St Albans Road West.

He was then stopped by several men who demanded that he hand over his mobile phone. The victim refused, but his bike was taken.

Detective Constable Max Maguire, from the Welwyn Hatfield Local Crime Unit, said: "Our enquiries are continuing, and I am appealing for anyone who saw what happened to please come forward.

"We are now releasing these four images because we believe the people pictured may have been in the area at the time and could have information to assist our investigation.

"Is this you, or do you recognise these people? Please email me at Max.Maguire@herts.police.uk with any information."

You can report information online at herts.police.uk/report, via online web chat at herts.police.uk/contact, or by calling the non-emergency number 101, quoting crime reference 41/67214/24.

Alternatively, contact Crimestoppers anonymously on 0800 555 111 or online at crimestoppers-uk.org.