A GANG of youths robbed a 15-year-old boy of his mobile phone in a "senseless" attack, said police.

The boy, who was standing with his friends in St Peter's Court, High Street, Chalfont St Peter, at 6.30pm on Saturday, September 24, was called over by three youths who asked him where they could buy drugs.

After telling the youths that he did not know where drugs could be bought the teenager was then asked to take down a phone number for the gang.

As he tapped in the number, one of the youths snatched the phone and walked away with the two other youths.

Police said all the offenders are black. The first man is aged between 18 and 19, medium build, 5ft 11ins tall, with a slight dark moustache, a square face and small eyes.

He was wearing a green/grey long sleeve coat and dark silky tracksuit bottoms. He also wore a diamond stud in his left ear and may have been wearing a black baseball cap.

The second young man is chubby, aged 17 to 18, 5ft 8ins to 5 ft 9ins tall with a round face. He was wearing a black hooded top, dark baggy trousers and a ring on his right hand.

The third man is aged 19 or 20-years-old, slim and around 6ft 2ins. He has a long slim face, long black sideburns and was wearing a dark green woolly jumper and jeans.

Anyone with any information should contact PC Reed, at Amersham Police Station on 08458 505505 or call Crimestoppers anonymously on 0800 555111