A TEENAGER was arrested after an alleged robbery in Dorchester which saw the victim pushed into a river.

The incident occurred outside the Co-op, in Trinity Street, with police saying a teen victim was assaulted and had his backpack taken.

It took place some time between 6.30pm and 7pm on Wednesday, July 31, with a man understood to have tried to intervene before the three boys left the area.

“The victim and the two teenagers then went to Frome Terrace, where the victim was allegedly assaulted and pushed into the river,” a Dorset Police spokesperson said.

“It is further reported that a man who intervened near the river was also assaulted and sustained minor injuries.

“The victim – who required hospital treatment for serious head and facial injuries – and the reported offenders are known to each other.

The victim was thrown into the river in Frome Terrace, police said. Picture: Google

“Following enquiries, a teenage boy from Weymouth was arrested on suspicion of inflicting grievous bodily harm, assault and robbery. He has been released on police bail as detectives continue their investigation.”

Detective Constable Mia-Isabella Bowditch, of Dorset County CID, added: “This was a nasty incident and we are conducting a number of enquiries to ascertain the full circumstances of how it occurred.

“I am keen to hear from any witnesses or anyone with information that could assist our investigation, particularly the man who attempted to intervene outside the Co-Op.

“I would also urge any motorists who were travelling in the areas of Trinity Street and Frome Terrace on the evening of Wednesday, July 31, to please check their dashcam footage to see if they have captured anything of relevance.”

Anyone with information should contact Dorset Police via www.dorset.police.uk, or by calling 101, quoting incident number 55240116923. They can also contact Crimestoppers anonymously online at Crimestoppers-uk.org or by calling Freephone 0800 555 111.