Thames Valley Police is appealing for witnesses to a robbery in Twyford.
At around 5.30pm on Friday, March 23,, three boys on bicycles approached the victim, a teenage boy, and his friends outside The Royal Pizza in London Road.
One of the boys got off his bike and asked the victim if he could ride his e-bike but he declined. The boy then became more aggressive, pulled his top and revealed a silver handle of a knife.
The offender and the two boys he was with then surrounded the victim and he handed over his e-bike key. The offender then rode the stolen e-bike towards Ruscombe.
The main offender is described as a white boy, aged around 16, around 5ft 9ins tall, and wearing a balaclava and all black clothing.
One of the other offenders is described as a white boy, aged around 16, around 5ft 8ins tall, and wearing a balaclava, black jogging bottoms and a puffer jacket.
The third offender is described as a white boy, aged around 14, around 5ft 8ins, and wearing a balaclava and a black tracksuit.
The stolen e-bike was a bright yellow E-Box Dragster.
Investigating officer, detective donstable Stephen Major, said: “I am appealing for any witnesses of this robbery to please come forward.
“Also, if you have CCTV cameras in the area or were driving in the area around the time of the robbery and have a dash-cam, please check your recordings in case they have captured something that could assist us.
“Anyone with information or footage should call 101 or make a report on our website, quoting reference number 43250138807.
“Alternatively provide information anonymously to independent charity Crimestoppers by calling 0800 555 111 or via its website.”