Owners of motorbikes in Leicester are being warned to be careful after a series of thefts.
Five vehicles have been taken from gardens in Braunstone in the past month.
Police said this had happened despite the bikes being secured with locks and left out of sight in rear gardens.
Owners have been advised to take as many security measures as possible, in particular securing bikes to an immoveable object.
The thefts occurred in Bewicke Road, Waltham Avenue, Hand Avenue, Wyville Row and Gunthorpe Road.
Two of the bikes were later recovered on Braunstone Park, one of which had been set on fire.
Pc Alan Cook, crime reduction officer for the city, said: "If you need to store your motorbike in your back garden then it is worth getting a ground anchor which can be cemented or bolted to the ground.
"The bike can then be bolted to the anchor. You can also use a disc lock which fits to the disc brakes."