Thames Valley Police is appealing for witnesses after three incidents on Tuesday.
The first incident occurred at 8.30am when the victim, a 24-year-old man, was walking to work. He was approached by two men near the Fishermead roundabout in the Springfield area.
He was asked to hand over his mobile phone, he ignored the request, put the phone in his pocket and ran up the hill. No weapons were seen or threats made to the victim.
The second incident occurred at 8.36am in the area of Four Bridges around Oldbrook, Leadenhall, Eaglestone and Fishermead. The victim, a 15-year-old boy, was walking to school when he was approached by three men and asked to take his coat off and turn out his pockets, which he did. He was asked to give them his mobile, which the victim said he did not have. The offenders then tried to force him to turn out his pockets at which point the victim ran off.
The third incident took place around 8.55am when the victim, a 27-year-old woman, had her bag snatched while she was walking through the underpass just off Montague Drive. As she turned around she saw three men cycling off towards Eaglestone.
The offenders are white men. One was described as in his late teens to early twenties, with short brown hair, a pale face and spotty complexion with bloodshot eyes. He was wearing a grey hooded top, possibly with red details, a black jacket over the hooded top, black/grey tracksuit bottoms and white trainers.
Another offender was described as having long scruffy uncombed straight hair which was over his ears. The bikes were described as one yellow/black bike, one red/black bike and one silver/black bike.
PC Caroline Vendy, from Milton Keynes police station, said: “These were clearly frightening incidents for the victims. Fortunately they did not suffer any injuries.
“I am keen to speak to anyone who was in this area at the time and witnessed these incident.”
Anyone with any information about this incident should contact PC Vendy via the 24-hour Police Enquiry Centre on 101. If you don’t want to speak to police you can call Crimestoppers, anonymously on 0800 555 111.