The man suspected of poisoning ex-KGB agent Alexander Litvinenko in London last year has said the British secret service tried to recruit him.
Speaking at a Moscow press conference Andrei Lugovoi, who denies the charges, said he had been made a scapegoat.
Mr Lugovoi said MI6 had recruited Mr Litvinenko, who in turn tried to recruit him to collect information on Russian President Vladimir Putin.
He also said the poisoning could not have happened without some involvement from the British intelligence services.
"Even if [British special services] hadn't done it itself, it was done under its control or connivance," he said, adding he had evidence of this, without giving details.
Mr Lugovoi said either MI6, the Russian mafia, or fugitive Kremlin opponent Boris Berezovsky carried out the killing.
"The main role," however, "is played by the British special services and their agents," he said.