Officers of Italy’s Guardia di Finanza, the financial police, raided a disused metro tunnel in Rome built under Benito Mussolini in the 1930s and seized 340 kg (750 lb) of marijuana thought to be worth 3 million euro.[1][2] The tunnel in the southeast of the capital, about a kilometre long, had officially housed a mushroom-growing business.[1][3]

A patrol had smelled cannabis coming from the mushroom company’s entrance on its regular rounds, and Saturday’s raid found hundreds of cannabis plants in various stages of growth hidden behind a wall in the 43,000 sq ft passageway, near vaults of the Italian central bank.[2][3] The farm’s owner was arrested.[2]