A parcel bomb addressed to Italian prime minister Silvio Berlusconi and linked to a series of similar devices posted in Greece caught fire on Tuesday at Bologna airport in northern Italy, AKI reported.
The package burst into flames when a police bomb squad tried to open it but no-one was injured. It was intercepted on a flight by the private TNT courier company that was re-routed to Bologna from Paris after fears a bomb was on board.
The remains of the bomb were taken for analysis.
Greek authorities suspended all airmail deliveries for 48 hours, after another parcel bomb reached German chancellor Angela Merkel's office and one intended for French president Nicolas Sarkozy was found in the Greek capital, Athens on Monday.
Greek authorities have blamed a far-left group for the attempted bombing campaign in which booby-trapped packages ignited at the Swiss and Russian embassies in Athens on Tuesday as staff tried to open them. No one was injured, police said.
Greek police on Monday arrested two men, aged 22 and 24 over the parcel-bomb campaign. One is a suspected member of Conspiracy of Fire Nuclei, a far-left group that appeared in 2008 and has carried out a wave of arson and minor bomb attacks on the offices and homes of politicians.