Detectives investigating two armed robberies in Runcorn are appealing for witnesses to come forward.
The first robbery took place on Saturday 12 May between 4.50pm and 5pm along Busway when a 14-year-old boy was approached by another teenage boy who was holding a knife.
The offender took his bike and rode off in the direction of Windmill Hill Avenue.
The second robbery took place on Sunday 13 May between 3.15pm and 3.20pm near a canal bridge in Sandymoore. Four male teenagers, one armed with a knife, demanded the boy hand over his bike but he managed to get away.
Detectives believe the two incidents to be linked.
A 14-year-old boy was arrested on suspicion of two robberies and has been released under investigation.
Anyone who may have witnessed either of the incidents take place or has any information is asked to contact Cheshire Police on 101 quoting IML 63147 on 13 May or IML 62333 of 12 May.
Information can also be passed on anonymously by calling Crimestoppers on 0800 555 111.