A bag containing a "large amount of cash" has been stolen from a premises on Cheltenham Crescent.
The purple Karrimor rucksack was stolen between 12.30pm and 12.45pm yesterday and contained a large amount of cash, invoices, keys and a wallet.
Officers are carrying out enquiries, and are appealing for anyone who was in the area at the time, or has any information about the theft, to contact them.
Call North Yorkshire Police on 101, select option 1, and quote reference number 12160224839.
You can also phone Crimestoppers anonymously on 0800 555 111.