Tools were stolen from a building site in Grantham some time over the weekend.
The burglary took place between Friday and Monday at a building site off Stonebridge Road in Grantham.
Offenders used cutting equipment to break into storage containers and stole bricklaying tools. One of the containers also caught fire, causing damage.
Anyone with any information can call Pc Pete Meldrum of Lincolnshire Police on the non-emergency 101 number quoting crime number 3214**3694.