Police arrested four teenagers after a balaclava-clad gang robbed a teenage boy in Watford.

The victim was walking towards an underpass at the junction with Peace Drive and Cassiobury Drive when he was approached at around 5.30pm yesterday (November 11).

They threatened him and took his headphones and Oyster card, police said, before the victim fled and called the force.

Today police said three 17-year-olds and an 18-year-old were arrested at the train station in Lower High Street on suspicion of robbery, after officers worked with CCTV operators to find the suspects.

They have now been released on bail.

Watford Neighbourhood Inspector Dan Jones said: “This was understandably a frightening incident for the victim and we will continue to support him.

“I appreciate the nature of this incident is concerning and we will be increasing our patrols in the area. If anyone has any information that could help progress our enquiries, please don’t hesitate to get in touch.”

Information can be reported online via the police website, or by calling non-emergency number 101, quoting reference 41/95391/24.