By TARIQ PANJA
The Associated Press
Wednesday, November 29, 2006; 11:08 AM

LONDON -- An Italian security expert who was one of the last people to meet with a former KGB agent who fell fatally ill said Wednesday that tests cleared him of radioactive contamination.

Mario Scaramella came from Rome to meet with Alexander Litvinenko at a sushi bar in London on Nov. 1 _ the day the former intelligence agent first reported the symptoms that ultimately led to his death in a hospital's intensive care ward.

In a deathbed accusation, the harsh Kremlin critic blamed Russian President Vladimir Putin for his poisoning. Putin has strongly denied the charge.

High doses of polonium-210 _ a rare radioactive element usually manufactured in specialized nuclear facilities _ were found in his body _ and Britain's health protection agency began a screening program for people who visited the same sites as Litvinenko on Nov. 1.

"I am fine," Scaramella told The Associated Press by telephone. "I am not contaminated and have not contaminated anybody else."

Scaramella returned to London to undergo tests and talk with the police Tuesday. He said he is in security protection and refused to say where he was.

More than three dozen staff at the two hospitals that treated Litvinenko will be tested for radioactive contamination, Britain's Health Protection Agency said.

The agency said 106 staff at Barnet General Hospital and University College Hospital had been assessed for possible exposure, and 49 would have their urine tested.

The mysterious death has clouded Anglo-Russian relations. Prime Minister Tony Blair said Tuesday that police were determined to find out who was responsible for Litvinenko's death.

"The police investigation will proceed, and I think people should know that there is no diplomatic or political barrier in the way of that investigation," Blair said in Copenhagen, Denmark. "It is obviously a very, very serious matter indeed. We are determined to find out what happened and who is responsible."

Media reports in Britain and Russia on Wednesday said that Litvinenko had been engaged in smuggling nuclear substances out of Russia.

The Independent newspaper reported that Litvinenko told Scaramella on the day he fell ill that he had organized the smuggling of nuclear material for his former employers at Russia's Federal Security Service, or FSB. The newspaper reported that Litvinenko said he had smuggled radioactive material to Zurich in 2000.

But Scaramella told the AP that he had been misquoted by the newspaper.

"He (Litvinenko) wanted to see me because he knew about smuggling of nuclear material, but as far as I know he was never involved in nuclear smuggling," he said.

London police say they are investigating the case as a "suspicious death" rather than murder, although they have devoted a large anti-terrorist force to the investigation.

Scaramella said he had been cleared of any involvement in the 43-year-old former spy's death.

"Let me take the opportunity to say that I'm not under investigation by any British authority," he said. "I am cooperating with them (the police)." Police declined to say whom they had spoken to.

Scaramella said he showed Litvinenko e-mails from a confidential source identifying the possible killers of Russian investigative journalist Anna Politkovskaya and listing other potential targets for assassination _ including himself and Litvinenko.

Following Litvinenko's death, more than 1,100 people called a health hot line over concerns they might be at risk from polonium poisoning, which is deadly in tiny amounts if ingested or inhaled. Sixty-eight have been referred to health authorities, the Health Protection Agency said _ including the 49 hospital staff.

Eight have been referred to a special clinic as a precaution. The tests should take about a week.

Traces of radiation have been found at six sites visited by Litvinenko.

A coroner will perform an autopsy on Litvinenko on Friday, "subject to appropriate precautions," in a bid to pin down the cause and circumstances of the death, said the local authority responsible, Camden Council.

Doctors had sought expert advice on whether Litvinenko's radioactive body posed a threat to the doctors and technicians performing the post-mortem.

A coroner's inquest will be opened Thursday and then adjourned until the police investigation is complete, the council said.

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Associated Press Writers Jill Lawless in London and Ariel David in Rome contributed to this report.