Security is tightened in Pakistan as Taliban fighters secretly bury their leader Saturday.<br/> <br />Hakimullah Mehsud was reportedly killed in a U.S. drone strike Friday.<br/> <br />Pakistan's Interior Minister Chaudhry Nisar Ali Khan is now lashing out at the United States saying the attack was a U.S. bid to derail planned peace talks with the Taliban.<br/> <br />SOUNDBITE: Pakistani Interior Minister, Chaudhry Nisar Ali Khan saying:<br/> <br />"First and foremost, the government of Pakistan does not see this drone attack as an attack on an individual, but as an attack on the peace process."<br/> <br />He said Pakistan will review its relationship with the United States.<br/> <br />These sentiments were echoed by cricket legend-turned politician Imran Khan who wants to block NATO supply routes into Afghanistan.<br/> <br />The supply lines are crucial as NATO prepares to withdraw from Afghanistan by the end of next year.<br/> <br />The Taliban have killed thousands of Pakistani civilians and numerous members of the secur
