Foreign Minister Tzipi Livni, a frontrunner in the race to replace Prime Minister Ehud Olmert in Kadima, was a Paris agent for Mossad in the early 1980s when it ran a series of missions to kill Palestinian terrorists in European capitals, according to former colleagues quoted by The Sunday Times. Sources quoted by the paper said Livni was on active service when Mamoun Meraish, a senior official in the PLO, was shot dead by a Mossad hit squad in Athens on August 21, 1983. She was not directly involved in the killing, in which two young men on a motorcycle drew alongside Meraish's car and opened fire, but her role in Mossad remains secret. Shortly afterwards Livni resigned and returned to Israel to complete her law studies, citing the pressures of the job. An opinion poll on Friday showed that Livni had more than twice as much support inside the ruling Kadima party as Shaul Mofaz, a former defense minister who is her chief rival. Livni joined Mossad after leaving the army with the rank of lieutenant and completing a year at law school. From her base in Paris she traveled throughout Europe in pursuit of Arab terrorists, the Times claimed. "Tzipi was not an office girl," said an acquaintance. "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."