Cannabis with a street value of up to £2m has been seized after a raid on what police believe to be the largest drugs factory ever found in Coventry.
The "industrial scale" cannabis farm was uncovered by officers at a commercial unit in Sandy Lane, Radford, on Monday.
Police said almost 5,000 cannabis plants were discovered in total.
Two men believed to be of Vietnamese origin were arrested at the scene and are currently in police custody.
Sgt Neil Ward, from West Midlands Police, said: "It was a very timely discovery as many of the plants were at maturity and ready to be picked.
"The set up was professional. We estimate the cost of the equipment alone to be around £60,000."
He added officers had acted following a tip-off from a member of the public.