Police are appealing for two women who witnessed a fight in Spalding to come forward.
The incident happened at 10pm on Sunday, August 4 on Westlode Street.
Two women, one with long blonde hair in a ponytail and the other carrying a pink handbag, are caught on CCTV walking past the incident and are believed to have shouted at the offenders.
Police are appealing for the women to come forward to assist with enquiries. They can speak in confidence to DS445 Lance Morgan on 01755 722233, ext 2612.