Islamabad , Pakistan ( CNN ) -- Pakistani authorities vowed Tuesday to use the international police agency Interpol to arrest former Pakistani President Pervez Musharraf in connection with the assassination of former Prime Minister Benazir Bhutto . `` The government is moving for his ( Musharraf 's ) red notice , '' Interior Minister Rehman Malik said , referring to the Interpol 's international arrest warrant . `` We will get him through Interpol to Pakistan . '' Malik made the announcement as part of a progress report of the four-year-long assassination probe that was presented to provincial lawmakers Tuesday in Bhutto 's home province of Sindh . The briefing lasted several hours and was broadcast live on Pakistani TV . Bhutto was assassinated in a gun-suicide attack in December 2007 , shortly after she came back to Pakistan from self imposed exile to take part in the 2008 general elections . Malik and the head of the investigation team said former Pakistani Taliban leader Baitullah Mehsud plotted the assassination and paid the equivalent of about $ 4,500 to a network of Islamist militants to carry out the killing . Using a Power Point presentation , pictures and video to outline the evidence they had gathered , authorities said Mehsud had Bhutto killed because she supported the west 's war against Islamist militants . Investigators said they collected much of their evidence from the accused plotters ' cell phone records before and after the killing . Last November a Pakistani court charged five alleged Islamist militants with aiding the suicide attacker and two senior police officers for failing to provide adequate security . Musharraf has also been accused of failing to protect Bhutto . In February 2011 a judge issued an arrest warrant for Musharraf after he did n't show up to court for questioning . Musharraf has been in self-imposed exile ever since he left Paksitan in 2008 . Last August authorities confiscated his property in Pakistan and froze his bank account . The former military ruler has denied having anything to do with Bhutto 's killing . In Tuesday 's briefing Malik and investigators said Musharraf rejected Bhutto 's request to use a western private security contractor for protection when she returned to Pakistan . They suggested Musharraf intentionally left Bhutto vulnerable because he felt politically threatened by her return . `` It was the duty of the government to provide the prime minister with protection , '' Malik yelled at one point . `` Why did you not give security ? What was the problem ? '' Journalist Nasir Habib contributed to this report .
Musharraf was president when Bhutto was assassinated . Officials said they believe he intentionally left her vulnerable . Bhutto was assassinated in a gun-suicide attack in December 2007 .