Former Russian spy Alexander Litvinenko, who is suspected of having been poisoned by his country’s security services, died tonight, the hospital treating him said.
The ex-KGB officer had been fighting for his life after suffering a heart attack overnight.
Doctors and police conducted further tests today in a bid to unravel the mystery over what made him ill.
Friends of the ex-KGB officer believe he was poisoned by Russian security services because of his fierce criticism of President Vladimir Putin’s regime - a claim denied by the Kremlin.