A 53-year-old man suffered minor injuries after he was robbed by a gang of three masked men in Stony Stratford on Tuesday.
The man, who works at a Chinese restaurant, was robbed of his takings as he walked to his car along Russell Street into Anthony Court at around 12.30am.
Three white men in dark clothes and balaclavas pushed him to the floor and searched him, stealing cash, a mobile phone and other belongings.
The men left in the direction of Russell Square School.
Anone with information should contact Det Con Darren Street at Milton Keynes CID via 08458 505505.