Rome ? Italian police Sunday arrested a man who met with an ex-KGB agent the day the Russian fell fatally ill from radiation poisoning, the man’s father said.

Mario Scaramella was arrested on accusations of international arms trafficking and slander. The charges were not believed to be directly related to the investigation into the poisoning death of Alexander Litvinenko.

Scaramella is the first person connected to the poisoning case to be arrested. He met Litvinenko at a London sushi bar on Nov. 1, the day the former KGB agent fell ill. Litvinenko died of poisoning from radioactive polonium-210 on Nov. 23.

The Italian’s father, Amedeo Scaramella, said his son was arrested in Naples after returning from London. Scaramella’s lawyer, Sergio Rastrelli, told RAI Tg1 TV news that he was scheduled to be questioned Wednesday. Rastrelli said he expected Scaramella to tell investigators all his actions were “legitimate and rightful.”

Scaramella said he showed Litvinenko e-mails at the Nov. 1 meeting 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.