A robber who threatened a teenage boy with a knife and stole his bicycle in Ipswich is being sought by police.

Suffolk Constabulary has released an e-fit of a man they would like to speak to following the attack in Princes Street on Sunday, February 4.

A 15-year-old boy was cycling when a stranger shouted at him and told him to stop outside ZAK’s car wash.

The male culprit pulled out a knife and ordered the boy to hand over his bike, described as a bright orange, Carrera men’s mountain bicycle.

The victim dropped the bike to the floor and the man picked it up and cycled in the direction of Ipswich Railway Station.

Anyone with information relating to this crime or who recognises the man from the e-fit should contact Ipswich Criminal Investigations Department on 101 quoting crime reference 37/6815/18, or contact the charity Crimestoppers anonymously on 0800 555 111.