BBC News
By Tom Symonds
Published
A suspected £10m amphetamine laboratory has been uncovered during a police raid.
The "large-scale" operation was found in outbuildings near Redditch, Worcestershire.
The investigation began after text messages were obtained by French police during the penetration of the encrypted phone network Encrochat last year.
Vats and sacks of ingredients were found in the lab, which is currently too hazardous for police to enter.
Five people have been arrested in the joint operation between the National Crime Agency and Warwickshire Police on Tuesday.
Firefighters and a chemicals expert were drafted in to assist with the raid.