West Yorkshire Police have warned cyclists across the Bradford district to tighten up on security amid fears thieves have been using a mobile phone app to track down the location of expensive bikes.

Concerns have been raised by cyclists about high-value bikes being stolen in the area recently.

Cyclists fear thieves have been locating the bikes through the use of online social media, including a mobile phone app used by some riders to record their performance and share details with others.

Police have revealed that three Bradford men have been charged in connection with thefts of bikes in the district.

Inspector Sue Sanderson, who leads Ilkley Neighbourhood Policing Team, said: “We have been in contact with Ilkley Cycling Club to warn people of these thefts and have been increasing patrols.”