Police are appealing for information after two custom built mountain bikes worth more than £11,000 were stolen from a secure car park in Bispham.
The theft took place between 2.20am and 8.30am at Admiral Point on Queens Promenade.
Officers said the first bike taken on October 26 is described as a Litespeed Ultimate time trial titanium frame with carbon rear chain stays and carbon front forks and is worth £6,950.
The second is a red, black and silver painted Raleigh carbon bike worth £ 4,150.
A Spokesman for Lancashire police, said: “I urge anyone with information about the theft or whereabouts of these high valued bikes to contact police directly on 101 quoting crime reference number AN130297.”