A large amount of metal was stolen from the back garden of a home in Whitehaven on Monday afternoon.
Police are investigating the theft, which took place at around 1.10pm on the Loop Road.
It is understood that a blue and white tipper truck may have been involved.
Anyone who witnessed this incident or has any relating information can report online at www.cumbria.police.uk/reportit quoting incident number 108 of the 26 July.
Alternatively, call the independent charity Crimestoppers, completely anonymously, on 0800 555 111.