Police patrols increased after Chorley lead thefts
Police have stepped up patrols in parts of Chorley following a spate of lead thefts.
Churches, schools and new-build houses are among the buildings which have had lead stolen in recent months.
Lancashire Police said thieves were taking the lead and replacing it with a substitute material which has no value.
The force has put more officers on the streets in the affected areas and they have also searched homes of people they suspect are involved.
Officers are urging people to be vigilant and to report any suspicious activity.
Recent targets include the Independent Methodist Church on Lyons Lane, which had lead stolen from the roof sometime between 21 and 28 September.
St Mary's Presbytery, in Mount Pleasant, had lead stolen from its roof at some point between 13 September and 18 September.
Buckshaw Village Primary School, St Michael's C of E High School and St John's Primary School in Whittle-le-Woods have also been targeted, as have houses on Yarrow Road and Mayfield Road.