A man in his 50s suffered a “serious head injury” after being robbed by a group of people in Royston.

Police today appealed for witnesses after the attack at around 9.30pm on Thursday, May 17.

The victim had alighted a train from London at Royston station when he was approached by an “unknown number of people”. He was then knocked to the floor and had cash taken from his wallet.

A police spokeswoman said: “The victim, in his 50s, made his way home where he then became unwell. He was taken to hospital where scans revealed he had suffered a bleed on the brain.

“He remains in hospital where he is awaiting an operation.”

Sergeant Will Ainsworth, who is investigating, said: “My team and I are conducting enquiries and doing all we can to establish exactly what happened.

“We appealing to anyone who was in the area surrounding the train station at the time stated.”

Anyone with information can contact officers by emailing william.ainsworth@herts.pnn.police.uk or calling police via non-emergency number 101, quoting crime reference G4/18/436.

Editor’s note (May 31): An earlier version of this article, based on the original appeal issued by police, incorrectly described the incident as happening on Thursday, May 24. Police issued a correction to their witness appeal on May 31, giving the correct date of May 17.