A shipwreck that could contain nuclear waste is being investigated by authorities in Italy amid claims that it was deliberately sunk by the mafia.

An informant told a judge the ship was one of a number he blew up as part of an illegal operation to bypass rules on the disposal of toxic waste.
The sunken vessel has been found 30km (18 miles) off the south-west of Italy. Murky pictures taken by a robot camera show the vessel intact and alongside it are a number of yellow barrels. Labels on them say the contents are toxic.

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