A 15-year-old boy was reportedly assaulted by a group of four teenage boys in the forest behind Morrisons in Chiltern Drive between 2pm and 2.30pm on Monday 23 October and police are appealing for witnesses.

It is alleged that the offenders stole the victim’s coat, jumper and jewellery. One of the boys was reportedly in possession of a knife.

The victim was taken to hospital for treatment to injuries to his face and shoulder.

A 15-year-old boy from Verwood – who is known to the victim – has been arrested on suspicion of robbery.

Detective Sergeant Dave Barnes, of Dorset County CID, said: “An investigation is underway into this incident and we are supporting the victim as our enquiries continue.

“I am appealing to anyone who was in the area and saw what happened to please come forward.

“Also, I am keen to hear from anyone with any information that may assist our investigation.”

Anyone with information is asked to contact Dorset Police at www.dorset.police.uk or by calling 101, quoting occurrence number 55230168398. Alternatively, independent charity Crimestoppers can be contacted anonymously online at Crimestoppers-uk.org or by calling Freephone 0800 555 111.