Two men robbed a teenager of his money and mobile phone in Bletchley on Monday afternoon.
The 15-year-old victim was walking along Whaddon Way with a friend at around 1.30pm when he was approached by two offenders.
He was separated from his friend and one of the offenders threatened him, demanding his money and mobile phone. The boy handed them over and the offenders made off towards the Whaddon Way shops.
The first offender was an Asian man, aged 17-19, about 6ft, of a slim or skinny build with a thin black moustache. He wore a black Puffa-style hooded body warmer and dark jeans.
The second offender was a black man, of a similar age, slightly taller and of medium build, wearing dark clothing.
If you think you saw either of the offenders, or have any information which could help with the investigation, contact Det Con Susan Russell on 101.
Alternatively call Crimestoppers anonymously on 0800 555 111.