Detectives in Derby are appealing for witnesses in connection with a robbery in which a 15-year-old boy had his mobile phone stolen.
At around 5.30pm on Thursday, April 17 the teenager was walking home along Carlton Road when he was approached by a man on a bicycle who asked for the time.
The victim took out his mobile phone and the offender then threatened him with a glass vase and demanded he hand over his phone.
The victim gave the offender his phone and then ran away.
The suspect was white, in his 20s and wearing dark clothing. He was riding a purple mountain bike.
Witnesses or anyone with information is asked to contact Derbyshire police on 101 or Crimestoppers anonymously on 0800 555 111.