Foreign Minister Tzipi Livni served as a Paris agent for the Mossad overseas intelligence agency in the 1980s during a series of missions it ran to kill Palestinian terrorists across Europe, according to the Sunday Times.

The report cites Livni's former colleagues as saying the Kadima frontrunner was on active duty in 1983, when senior Palestine Liberation Organization official Mamoun Meraish was shot dead by two Mossad agents in Athens.

While Livni was not involved in the killing, her service in the Mossad remains secret, the report says. She had joined the agency after completing her service in the Israel Defense Forces with a rank of lieutenant and one year of law school.

According to the report, during Livni's service in the Mossad she traveled from her Paris base throughout Europe, seeking out Palestinian terrorists.

"Tzipi was not an office girl," the report quotes an acquaintance of Livni as saying. "She was a clever woman with an IQ of 150. She blended in well in European capitals, working with male agents, most of them ex-commandos, taking out Arab terrorists."

Livni resigned from the agency in the 1980s and returned to Israel to complete her legal degree, citing the stress of the job, the Sunday Times wrote.

The foreign minister is seen as the heir to the Kadima party, once primary elections have been held. Last week, she broke her silence regarding the investigation against Prime Minister Ehud Olmert and called for fresh elections amid the corruption case.

A recent Haaretz-Dialog poll indicated that a Livni-led Kadima would garner 23 Knesset seats, compared to a predicted 29 seats for opposition leader Benjamin Netanyahu's Likud party.

Livni has greatly accelerated her political activity within Kadima since the probe against Olmert was announced. Party sources say that last week her camp stepped up their recruiting efforts, taking hundreds of party membership applications from party headquarters