Litvinenko Probe Finds More Radioactive Sites

The London restaurant where Litvinenko is believed to have been poisoned (epa)

November 28, 2006 -- British authorities say traces of the radioactive substance that killed the former Russian spy Aleksandr Litvinenko have been found at several more sites in London.

Unconfirmed reports said they include a building owned by Litvinenko's colleague, the exiled Russian billionaire Boris Berezovsky.

Another address was the office of a security company called Erinys, which Litvinenko visited.

The substance, polonium-210, was named as being responsible for the Kremlin critic's death last week.

In a deathbed statement, Litvinenko blamed Russian President Vladimir Putin for his death, an accusation the Kremlin has dismissed.

(compiled from agency reports)