Between 9.20pm and 11.25pm on 11 May 2018, two persons have entered a secure compound at MDL Powerup Limited on Barras Lane, Dalston, Carlisle.
Entry was gained by cutting through a perimeter fence.
A mini digger was stolen similar to that pictured.
The digger was missing its caterpillar tracks and cannot be driven. It was placed onto a small trailer, being pulled by a quad bike.
Officers are seeking witnesses who saw anyone in the area around this time, saw a quadbike and trailer around that time or have seen a mini digger similar.
Anyone with information is asked to call 101 quoting log 119 of 15 May 2018 or call Crimestoppers on 0800 555 111.