A motorist was robbed at knifepoint by thee attackers on Monday lunchtime in Milton Keynes.
The 53-year-old victim was driving in Pitfield, Kiln Farm, at 12.15pm when he saw a car driving behind him which was flashing its lights.
The victim slowed his car down but did not stop, but when the vehicle overtook him and the driver gestured for him to pull over, he did so, got out and stood by his car.
Three people got out of the other car and approached the victim while pulling their hoods over their heads.
One of them pulled a knife from his jacket and brandished it against the victim while another offender stole the victim’s wallet.
The first offender was white, 6ft 2ins, in his early twenties, and of skinny build. He had dark facial hair, and wore a black hooded top which had a zip down the middle or buttons, and dark denim jeans.
The second offender was white, 5ft 6ins to 5ft 8ins, of average build, in his teens to early twenties, and wore a dark hooded top and black gloves.
No description is available of the third offender.
Their vehicle was a light blue coloured car which had a registration plate beginning with T.
If you have any information about the incident or saw what happened call Det Con Wendy Cissell on 101.
Alternatively call Crimestoppers, anonymously, on 0800 555 111 or online at www.crimestoppers-uk.org.