BBC News reports:

Paul Gray, the bassist for US Metal band SLIPKNOT died last month of an accidental overdose, an autopsy has revealed. Toxicology tests showed a fatal level of morphine and fentanyl, a synthetic morphine substitute, in his blood. Police said there was no evidence of a prescription for either drug.

His body was found by an employee at a hotel in Des Moines, Iowa on May 24th. The autopsy also revealed signs of significant heart disease, police in Urbandale, a Des Moines suburb, said. A spokesman for the Urbandale police said they were trying to find out how Gray obtained the drugs.

The spokesman said charges were possible.

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