Two cyclists threatened another rider before making off with his bike.
The two robbers blocked the cyclist's path as he cycled along Western Boulevard, near Bede Park, in Leicester's West End at 4.15pm on Saturday.
One of them tried to push the victim off his bike. The pair then threatened him and ordered him to get off the cycle – a black, grey and white Raleigh Metro GTX Hybrid.
The men left one of their bikes behind and rode off with the victim's bike along either Braunstone Gate or Duns Lane.
Pc Waheed Nagdi said: "The victim was not hurt in this incident but has been left shocked by what happened.
"We are appealing for anyone who may have seen the incident or two men fitting these descriptions to contact us."
The robbers are black. One has a light complexion, is in his early-20s and has very short black hair and stubble above his top lip and was wearing a brown or reddish coloured hooded jacket and jeans.
The other man has a darker complexion, is a similar age and was wearing a black puffer-style coat with the hood up and pulled tight around his face.
The stolen bicycle has a chunky frame, thin road tyres and butterfly handlebars, a black and red racing saddle, two water bottle holders and front suspension.
Contact Pc Nagdi on 101 or Crimestoppers, which is anonymous, on 0800 555 111.
