Thames Valley Police is appealing for witnesses to a robbery in Springfield.
The incident happened at around 9.30am on Friday, on the Redway by the canal bridge, close to Beverley Place, Springfield.
The victim, a 48-year-old man, was walking along the Redway when he was confronted by two men, one of whom produced a craft knife.
The offenders demanded that the victim hand over his mobile phone, money and cigarettes.
The victim was then assaulted, during which £45 and a small bottle of whiskey was stolen from him. He was left lying on the grass verge and both offenders ran off towards Peartree Bridge.
Det Con Wendy Cissell, from the Milton Keynes Priority Crime Team, said: “The victim needed hospital treatment for some small cuts to his chest.
“I’m keen to speak to anyone who was in the area at the time and witnessed this incident or two men acting suspiciously in the area at the time.”
The first offender is black, in his early twenties, with a muscular build, black cropped tight Afro hair, a round face with high cheekbones, and very white teeth. He wore a small hoop earring and a large gold ring on his left hand.
The second man is Asian, in his early twenties, with a medium build, black short cropped hair, a black goatee beard, shaved line to left eyebrow and spoke with a local accent.