A man peddles household goods to supporters of Qadri, during the Revolution March in Islamabad
A man peddles household goods to supporters (unseen) of populist cleric Tahir ul-Qadri, leader of political party Pakistan Awami Tehreek (PAT), in front of the Parliament house building during the Revolution March in Islamabad August 27, 2014. Thousands of protesters, led by opposition leader Imran Khan and Qadri, are now camped out in the heart of Islamabad - the so-called "Red Zone". REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A supporter of Khan reacts while listening to the national anthem with others during what has been dubbed a "freedom march" in Islamabad
A supporter of the chairman of the Pakistan Tehreek-e-Insaf (PTI) political party Imran Khan reacts while listening to the national anthem with others during what has been dubbed a "freedom march" in Islamabad August 26, 2014. Protesters led by cricketer-turned-politician Khan and firebrand cleric Tahir ul-Qadri have vowed to occupy the capital, Islamabad, until Sharif resigns - a demand the premier has firmly rejected. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A supporter of Khan cheers while listening to him speak during what has been dubbed a "freedom march" in Islamabad
A supporter of the chairman of the Pakistan Tehreek-e-Insaf (PTI) political party Imran Khan cheers while listening to him speak during what has been dubbed a "freedom march" in Islamabad August 26, 2014. Protesters led by cricketer-turned-politician Imran Khan and firebrand cleric Tahir ul-Qadri have vowed to occupy the capital, Islamabad, until Sharif resigns - a demand the premier has firmly rejected. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Khan supporter waves national and party flags during what has been dubbed a "freedom march" in Islamabad
A supporter of the chairman of the Pakistan Tehreek-e-Insaf (PTI) political party Imran Khan waves national and party flags while listening to him speak during what has been dubbed a "freedom march" in Islamabad August 26, 2014. Protesters led by cricketer-turned-politician Imran Khan and firebrand cleric Tahir ul-Qadri have vowed to occupy the capital, Islamabad, until Sharif resigns - a demand the premier has firmly rejected. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
Khan gestures while speaking to his supporters during what has been dubbed a "freedom march" in Islamabad
Chairman of the Pakistan Tehreek-e-Insaf (PTI) political party Imran Khan gestures while speaking to his supporters during what has been dubbed a "freedom march" in Islamabad August 26, 2014. Protesters led by cricketer-turned-politician Khan and firebrand cleric Tahir ul-Qadri have vowed to occupy the capital, Islamabad, until Sharif resigns - a demand the premier has firmly rejected. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A supporter of Khan chants during what has been dubbed a "freedom march" in Islamabad in Islamabad
A supporter (C) of the chairman of the Pakistan Tehreek-e-Insaf (PTI) political party Imran Khan, wearing shirt with the imprint of him, chants during what has been dubbed a "freedom march" in Islamabad August 26, 2014. Protesters led by cricketer-turned-politician Imran Khan and firebrand cleric Tahir ul-Qadri have vowed to occupy the capital, Islamabad, until Sharif resigns - a demand the premier has firmly rejected. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
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A supporter of Tahirul Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), sleeps along a sidewalk with others in front of the Parliament House building
A supporter of Tahirul Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), sleeps along a sidewalk with others in front of the Parliament House building during Revolution March in Islamabad August 26, 2014. Qadri, who controls a network of Islamic schools and hospitals, and opposition politician Imran Khan have been leading protests in the capital, Islamabad, trying to bring down Pakistani Prime Minister Nawaz Sharif. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Supporters of Tahirul Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), walk ahead of policemen in front of the Parliament House building in Islamabad
Supporters of Tahirul Qadri, Sufi cleric and leader of political party Pakistan Awami Tehreek (PAT), walk ahead of policemen in front of the Parliament House building during Revolution March in Islamabad August 26, 2014. Qadri, who controls a network of Islamic schools and hospitals, and opposition politician Imran Khan have been leading protests in the capital, Islamabad, trying to bring down Pakistani Prime Minister Nawaz Sharif. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)