-- Wife of ex-Russian spy Alexander Litvinenko tests positive for same radioactive substance that killed him, family source says

The wife of former Russian spy Alexander Litvinenko has tested positive for traces of polonium-210, a family source says. Earlier, Britain's Health Protection Agency said a "significant quantity" of the deadly substance ingested by Litvinenko before his death has been found in a person who had "very close contact" with him. Italian Sen. Paolo Guzzanti confirmed that it was Italian security expert Mario Scaramella.

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