Litvinenko: Russian investigators now in London

Interfax reports that

Russian investigators probing the murder of former officer of the Russian Federal Security Service (FSB) Alexander Litvinenko are in London, where they are expected to question more than 100 people, including exiled businessman
Boris Berezovsky.

Interfax learned on Tuesday that a delegation headed by Russian Deputy Prosecutor General Alexander Zvyagintsev left for the United Kingdom a day earlier.