ATHENS (Reuters) - Unknown eavesdroppers tapped the mobile phones of Greek prime minister Costas Karamanlis, five cabinet members and dozens of top officials for about a year, the government said on Thursday.
Illegal software was installed at Greece's second biggest mobile phone operator, Vodafone Greece, allowing the recording of about 100 phones, mainly belonging to the government but one owned by the U.S. embassy in Athens, officials said.
"The phones tapped included the prime minister's, the whole leadership of the defence ministry and the whole leadership of the public order ministry, some foreign ministry phones, one former minister, now in opposition, and others," government spokesman Theodore Roussopoulos told a news conference.
In what he described as "an important issue related to national security", Roussopoulos said prosecutors had brought charges of violating the privacy of telephone communications against unknown perpetrators.
A judicial investigation would also look into possible charges of espionage, he added.
Socialist opposition politicians, including former defence minister Yannos Papandoniou, whose phone was among those tapped, reacted angrily and demanded a full investigation.
"It's unacceptable that I was not informed for 10 months so as to protect my human and individual rights," he told reporters. "This is a strange case. All the people targeted were somehow involved with national security."
The wiretaps lasted from just months before the 2004 Athens Olympics until March 2005, when Vodafone Greece, a subsidiary of Vodafone, discovered the incident and reported it to authorities.
The bulk of the tappings took place around the August 2004 Athens Games, the most guarded Olympics in history with 1.2 billion euros ($1.45 billion) invested in security, Justice Minister Anastasios Papaligouras told the news conference.
The head of Vodafone Greece, George Koronias, reported to the government in March last year that about 100 mobiles had been monitored.
But the shutdown of the illegal software in the Vodafone system wiped out all traces of how and from where it had been installed, Public Order Minister George Voulgarakis told the news conference. Vodafone had no immediate comment.
The list of those tapped was released by the press ministry. U.S. embassy officials declined to comment on the disclosure that one mobile involved belonged to the mission.
"A preliminary investigation is completed and charges against unknown perpetrators have been submitted," Roussopoulos said. "Greek citizens have a right to know."