| Long but useful summary of what's known so far. |
Detectives of the newly-formed counter-terrorism command may arrive in Moscow as early as today to question the trio, as well as two other men who may have met Mr Litvinenko during a visit to London. They have already interviewed Boris Berezovsky, the oligarch who employed Mr Litvinenko after they fled to Britain from Russia six years ago. Mr Berezovsky is convinced that his friend was assassinated on the orders of the Kremlin. "Alexander was my friend," he said. "I don't want to comment any more until after the police investigation."
| Police are understood to be interested in the movements of at least two visiting Russians whose names have not emerged in public. |
John Reid, the home secretary, said yesterday the investigation would expand wherever necessary. "The police will follow wherever this investigation leads inside or outside of Britain." He declined to comment on motives for the poisoning. "The worst thing we can do is speculate," he said. "This isn't a game of Cluedo."