A group of four teenagers were robbed for their wallets, cash, backpacks and an Apple iPhone by two men in Huddersfield.
The victims, aged 15 and 16, were walking home in Cumberworth Road in Skelmanthorpe when they were approached from behind by two men.
One of them threatened and demanded their belongings. Scared, the youngsters handed over their property before the culprits escaped, possibly in a Peugeot 106.
Both men were described as white, in their late teens or early 20s, and between 5ft 10ins and 6ft 2ins tall.
Both were of average build and wearing dark clothing.
Anyone with information about the mugging, between 8.30pm and 8.50pm on Friday, February 15, should call Detective Constable Divek Singh Ubhi on 101.
Information can also be passed on anonymously by calling CrimeStoppers on 0800 555111.