A man was assaulted and verbally abused by a gang during a robbery in Aylesbury on Monday.
Thames Valley Police are appealing for witnesses to the incident which happened at around 10.30pm, in which the victim, a 40-year-old man, was walking in Hannon Road when he was approached by seven men.
The offenders began verbally abusing the victim, and then proceeded to assault him several times to the face and body, causing him to fall to the ground. One of the offenders assaulted the victim with a knife.
They also stole his phone and wallet. The victim was taken to Stoke Mandeville Hospital, where he remains.
A 33-year-old man from Oxford, a 17 year-old boy from Aylesbury and a 20-year-old man from Aylesbury were arrested on suspicion of robbery.
A 16-year-old boy from Aylesbury has been arrested on suspicion of GBH. The 33-year-old man and the 17-year-old boy have been bailed until September 6. The 20-year-old man and the 16-year-old boy remain in police custody.
Det Con Bruce Wilson, at Aylesbury Force CID, said: “We would like to reassure the community we are investigating this robbery and I would appeal to anybody who has any information as to the identity of the offender to come forward to police on the non-emergency number 101.
“We would also be grateful for any witnesses who may have seen seven men in the area on Monday evening to come forward.”
Or witnesses can speak to Crimestoppers anonymously on 0800 555 111.