A man was threatened with a knife and attacked when he refused to hand over his rucksack in High Wycombe town centre.

The man - in his twenties - was walking along Pauls Row with four of his friends in the early hours of Tuesday morning (November 12) when he was approached by three men.

One of the men stepped aside while the other two demanded he hand over his rucksack.

The first attacker said he had a knife and when the man refused to hand over his bag he was assaulted by him, with a second man joining in.

Fortunately the man's friends intervened to stop the attack, although the first attacker continued to shout abuse at them as they left.

Nothing was stolen but the man suffered minor injuries and had to be treated at Wycombe Hospital.

Police are investigating the attack as an attempted robbery and assault and have released an e-fit of a man they would like to speak to.

The man in the e-fit image is a white man in his twenties with a chubby build, short light-blonde hair, a chinstrap beard and a tattoo on his neck. He was wearing a black puffer jacket with jogging bottoms.

He was noticeably taller than the other two men.

Case Investigator Natasha Burns, based at High Wycombe Police Station said there should be a number of witnesses, even though the attack happened at 12.40am.

She said: "Although this incident happened in the early hours of the morning, there were a number of people in the town centre who may have witnessed it or saw the offenders matching the descriptions and e-fit."

If you have any information, call 101 or make a report online using reference 43190352742.

To give information anonymously, call Crimestoppers on 0800 555 111.