Cannabis farm found at Gala Bingo hall in Kettering
A "sophisticated" cannabis farm has been found inside a former high street bingo hall.
The sprawling growing operation reached all four corners of The Gala Bingo building in Kettering.
Officers found lines of marijuana plants and a hydroponic cultivation system when they raided the premises at 10:30 BST.
Northamptonshire Police said the factory could produce drugs worth about £2.8m each year.
The force said officers would spend the day removing about 2,000 plants from the site after electronics were made safe.
No arrests have been made.