There was also a substance thought to be cleaning fluid found in Mr Nall's eyes, the prosecution said.

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The next day he began a clean-up operation at his home, washing the dining room carpet and scrubbing every inch of the house with what one police officer recalled was a "lemony" cleaning fluid.

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Desmorphine, a synthetic with similar effects of heroin made from house-held chemicals like codeine (available over the counter in Russia), iodine, lighter fluid, gasoline, and industrial cleaning oil, is street-named Krokodil for the way it literally devours its users (like the mean crocodile).

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