On Monday (November 17) a property on London Road in Haugham was broken into, and a number of items of jewellery were stolen from inside.
The burglary took place between 11.30am and 1pm.
The previous day, on Sunday (November 16), two men broke into a storeroom at the Post Office on Carlton Road, Manby, at around 11.10pm. It is believed that they were picked up by a vehicle at 11.25pm.
If you have any information regarding either of these burglaries, or if you have seen anyone acting suspiciously in the area, then contact Lincolnshire Police on 101, quoting incident number 180 of November 17 for the Haugham burglary, or incident number 95 of November 17 for the Manby break-in.
Alternatively, you can call Crimestoppers anonymously on 0800555111.