Police in Leyland are warning residents to lock up their bicycles after a spate of thefts in the area.
A total of 25 have been stolen since the beginning of July while in Farington Moss alone there were four in the last week worth between £250 and £650.
PC Mike Cobley, who covers the Farington area, is calling on local people be vigilant.
He said: “We have had problems with people stealing from outside houses or even items from cars.
“They are opportunist thieves and we have a few lines of inquiry which we are investigating. We get peaks and troughs of this type of crime but it has risen dramatically over the past few weeks.
“I would urge people to make sure that their bike is chained up or put in a shed that is locked.”
PCSO Cobley added that the police cyclists the chance to get their bikes stamped with their postcode at Morrisons on Golden Hill Lane on August 25.
He said: “If they are stamped with a postcode then it is far easier to find out who they belong to if they are recovered.
“It is still early in the year but we have carried out a few warrants and been able to successfully return them to their owners.”
One of the victims was Lisa Harrison from the Leverhouse area of Leyland.
Her son’s £150 bike was taken from their shed in the back garden and says it has left her feeling ‘vulnerable and uneasy’.
“The young people that have stolen the bike are brazen that they think they can come onto our property and steal something,” she said.
“I am on edge when I lock up the house in the evening and my daughter will not go out in the back garden when it starts getting dark in case they come back.
“It is concerning that I work hard to pay for these presents for my kids and then they just come along to steal them.”
If you see anything suspicious contact Crimestoppers anonymously on 0800 555111.