Two bikes were stolen from a back garden in Gaywood earlier this week.
They were taken from a property on Regency Avenue some times between 6.30pm on Tuesday, January 29, and 7.30am the following morning.
One bike is a Raleigh AT40 with a black frame and white rims on the wheels.
The other is a Viking Sprint road racing bike with a red frame and curved racing handle bars. This bike had flat tyres when it was taken so someone may have noticed it being ridden or pushed in an odd way.
Anyone who may have seen anything suspicious in the area is asked to contact PC Pete Burt at Lynn police station on 101 or call Crimestoppers anonymously on 0800 555 111.