Police investigating a series of robberies near an Underground station have made two arrests.

Officers have been carrying out undercover patrols near Moor Park station in response to a number of robberies in the area.

Two of the eight robberies on the victims aged between 12 and 18 reportedly involved a knife, Hertfordshire Constabulary said.

Smartphones, cash, and earphones were among items stolen in the robberies which took place between November 11 and November 29.

Plain-clothes officers had been carrying out an operation in Moor Park towards the end of November and a number of stop-and-searches took place.

On November 29, two 16-year-old boys from Northwood and Watford were arrested on suspicion of robbery in connection with eight offences near Moor Park station.

They have both been released under investigation while enquiries continue.

Police hope the action taken has provided some "reassurance" to the public.

Detective Sergeant Steven Boddy, from the Three Rivers local crime unit, said: "The victims of these offences have been left understandably distressed by their ordeals, so we are pleased to have made these arrests which we hope will serve as reassurance to both them and the wider community.

"After we had linked a number of offences together, we were able to target our resources in the form of covert plain-clothes officers. They patrolled the area around the station at the end of the school day, which we had identified as a peak location and time for these incidents, and linked in with nearby schools to offer reassurance.

"We will now carry out further enquiries and will be keeping the victims and their families updated as we progress with our investigation."