Russia's security service said Tuesday it was questioning a Russian national who approached it claiming he had been recruited by Britain's Secret Intelligence Service, RIA-Novosti reported.
"The citizen, whose name cannot be revealed, said Britain's MI6 recruited him," the agency quoted the press service of the Federal Security Service (FSB)
A service spokesperson said the person disclosed the names of British secret agents and revealed secret addresses in Europe that MI6 agents had given him, as well as the tasks he had been set.
The press service said the person cited fear for his life as the reason he had approached the FSB.
"The press conference by [Andrei] Lugovoi and the subsequent demands [on him] by MI6 agents for an immediate meeting in one of the European cities prompted him to do so," the spokesperson said.
Britain has charged Lugovoi with the murder of Alexander Litvinenko, an FSB defector who died of radiation poisoning in November in London shortly after receiving British citizenship, and wants his extradition.
In a Moscow news conference May 31, the former security officer turned businessman said Litvinenko and his boss, fugitive Russian tycoon Boris Berezovsky, had worked for MI6.
The FSB press service also quoted the person as saying that Berezovsky, who is wanted by Russia on charges of fraud and attempts to overthrow the government, had repeatedly proposed that they meet in Israel and pressed for his meeting with British agents.
"FSB is carefully confirming the information," the spokesperson said.