A high value amount of fuel has been stolen from the United Utilities site in Siddick, Workington.
Police are investigating the theft, which took place between 5pm on September 2 and 5am on September 3.
Officers are appealing for any witnesses who may have any information or seen anything suspicious in or around this location, to contact Cumbria police on 101 or report online at www.cumbria.police.uk/reportit, quoting incident number 204 of 3 September.
Alternatively, contact Crimestoppers, anonymously, on 0800 555 111.