Thames Valley Police is appealing for information after reports of serious sexual assault and an assault in Reading.
The two victims, two men aged 26 and 25, were outside the Metro Bank in Broad Street Mall at about 1.45am yesterday (7/8).
The victims were speaking to two men. One of the men was described as white, about 5ft 10ins, with auburn or dark hair, of medium to stocky build, in his twenties with a thin moustache. He had a bicycle.
The other man was white, of medium build, about 5ft 10ins, with very short hair. He was wearing a grey tracksuit jumper with a hood.
The victims left the men and then walked together along West Street and onto Greyfriars Road where they were stopped by the two men they had spoken to outside the bank, however the men were now with a group of about six to seven other men.
An argument ensued between the victims and the group of men, one of whom brandished a knife.
The 25-year-old victim was then punched by a mixed race man.
The knife was not used during the assault.
The 26-year-old victim was chased by four white men to Vastern Road where they demanded money from the victim.
The offenders then walked the victim to Caversham Road where they were joined by another white man who had a bicycle.
The victim made several failed attempts to withdraw money from a cash point in Caversham Road before running away.
The offenders chased the victim to Thames Path where they seriously sexually assaulted him.
Senior Investigating Officer, Detective Inspector David Turton of Force CID based at Reading police station, said: “These are two extremely serious offences which are being thoroughly investigating.
“There was a scenewatch in place at Thames Path but this has now been lifted, however further enquiries are ongoing including obtaining and reviewing CCTV.
“Our priority is the welfare of the victims who are being supported by specially trained officers at this time.
“I would appeal to anyone who believes they have any information about the offences, no matter how insignificant you think it might be, to please contact police immediately. The easiest way to get in touch is by calling 101 or visiting your nearest police station and quoting the reference number for this investigation which is 43170233016."