Two bombs were found near Italian Prime Minister Silvio Berlusconi's villa on the island of Sardinia early Wednesday, hours after a visit by British Prime Minister Tony Blair.

Italian news agency ANSA said a caller claiming to be from the Proletarian Nuclei for Communism (NPC), a radical group active on the island, phoned a warning to the Sardinian newspaper L'Unione Sarda late Tuesday saying the organization had planted two bombs.

The first bomb found by police was programmed to explode and a second device was later discovered, said ANSA.

Berlusconi's office said the prime minister is "calm" and is being briefed on investigations.

Blair left Sardinia on Tuesday after a two-day visit to Berlusconi's villa.

Source: Xinhua