A sophisticated underground cannabis farm has been found hidden inside a network of tunnels used as a nuclear bunker during the Cold War.
West Mercia Police said officers had seized more than 400 cannabis plants, worth around £650,000, from the Drakelow Tunnels in Worcestershire .
A 45-year-old man was arrested on suspicion of money laundering and being concerned in the production and supply of controlled drugs, police said.
Hydroponic equipment, including heating, lighting and ventilation fans was also discovered in the underground complex, which dates back to the Second World War.
The 285,000 sq ft network of tunnels was earmarked by the Home Office as a regional seat of government in the event of a nuclear attack in late 1950s.