Three men were arrested after a night-time raid at a cannabis farm in Fleetwood.
Police discovered a “cannabis set up” of around 80 plants at the address in Church Street.
Officers raided the property shortly after 11pm on October 31.
A spokesman for Lancashire Police said: “Three men were arrested at the scene on suspicion of cannabis cultivation.
“They are aged, 44, 40 and 39.”
The men remain in police custody.