Attacker strikes near Canal Road, Shipley

The victim was walking with his younger brother near Canal Road when he was approached by a suspect who had followed him from Frizinghall.

The attacker threatened him with the knife and ran off with his Nokia E63 mobile phone and a silver iPod.

Detectives would like to speak to anyone who witnessed the incident, at about 3.30pm on Friday.

The attacker is described as white, slim, in his late teens, and about 5ft, with dark stubble and a spotty complexion. He was wearing a black woollen tracksuit top with a zip and a wide dark blue stripe down each sleeve, black tracksuit bottoms and black trainers.

Contact Detective Constable Angela Harvey, of Airedale and North Bradford CID, on 0845 6060606, or Crimestoppers, anonymously, on 0800 555 111.