A large quantity of oil has been stolen from a property at Tynwald Mills in St John's.
Peel police say 300 litres was taken sometime between Thursday, October 13 and Sunday, October 23.
They say such a large volume would have taken a considerable amount of time to extract, and more than one person would have been involved.
Anyone who has information about the theft is asked to contact Police Headquarters on 631212, or the anonymous Criemstoppers line on 0800 555 111.
Government defeated as Tynwald rejects North and West Area Plan
Kate Lord-Brennan's amendment to delay approval was voted down before the plan itself was rejected by the Legislative Council
Child First Policy hailed a good first step by Tynwald Youth Select Committee
Hoping to protect and promote the rights of children, it's been received by Tynwald
Enterprise minister apologises again for 'foot in mouth moment'
Tim Johnston addresses his claim that hotels are 'full all season'
Tynwald begins debate on controversial North and West Area Plan
The planning framework has prompted opposition from local authorities, legal representatives, and MHKs ahead of the vote
