Humberside Police is appealing for witnesses following an assault on Priestgate Close, Nafferton, Driffield at 1.30am on Saturday 15 November 2014.
Two men aged 25 and 27 were working home following a night out when an unknown woman approached one of the men who was pushing a bike before allegedly trying to grab the bike.
The victim resisted before a number of men in the company of the woman approached and assaulted both men, however after around 10 second they managed to get away.
The 25-year-old sustained a badly swollen and bruised face and the 27-year-old sustained a cut to his face. They attended Scarborough General Hospital for treatment.
During the incident one of the victims lost a black coloured Samsung Galaxy Ace.
The woman was described as a woman who was 5ft 5ins tall with a large build and dyed red hair.
She was accompanied by between three and five white men.
Anyone who witnessed the incident or has information pertinent to the investigation should call 101 quoting crime reference number 2080750 or Crimestoppers 0800 555 111.