A 15-year-old boy had his bike stolen after being threatened with a knuckle duster in Letchworth on Tuesday night.
At around 10.30pm, the boy, who lives in Letchworth, was riding his bike along Broadway with a friend.
When the two young cyclists reached the fountains in Broadway Gardens a man, who had been sat on a bench, asked the boy to hand over his bike.
When the victim refused, the offender lifted his hand and showed what is believed to have been a knuckle duster.
The teenager handed over his bike, with the offender riding off towards the town centre with two other men.
The thief is described as a black man in his early to mid-20s who was around 6ft 2ins tall and wearing a black tracksuit, hooded top and baseball cap. The other two men were white, in their late teens and between 5ft 8ins and 6ft tall.
Anyone with information is asked to contact Det Con Simon Goodship via Hertfordshire Constabulary’s non-emergency number 101 or alternatively call Crimestoppers anonymously on 0800 555 111.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here