A supporter of Pakistan's MQM political party, holds a poster of Altaf Hussain as he chants slogans along with others to show solidarity with their leader in Karachi
A supporter of Pakistan's Muttahida Quami Movement (MQM) political party, holds a poster of Altaf Hussain as he chants slogans along with others to show solidarity with their leader in Karachi June 4, 2014. Exiled Pakistani politician Altaf Hussain, one of the most divisive and feared figures in Pakistan, was arrested in London on Tuesday, his party said, sparking fears of a violent backlash in Pakistan and sending the country's biggest city into lockdown. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST TPX IMAGES OF THE DAY)
A convoy of security officials leaves after visiting the site of a bomb attack on a security forces vehicle in Fateh Jang
A convoy of security officials leaves after visiting the site of a bomb attack on a security forces vehicle in Fateh Jang June 4, 2014. A suspected suicide bomber attacked the Pakistani security forces vehicle in Rawalpindi, home to army headquarters, on Wednesday, killing five people including two officers, a military source said. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Soldiers leave after visiting the site of a bomb attack on a security forces vehicle in Fateh Jang
Soldiers leave after visiting the site of a bomb attack on a security forces vehicle in Fateh Jang June 4, 2014. A suspected suicide bomber attacked the Pakistani security forces vehicle in Rawalpindi, home to army headquarters, on Wednesday, killing five people including two officers, a military source said. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST MILITARY)
Police point as they prevent people from approaching the site of a bomb attack on a security forces vehicle in Fateh Jang
Police point as they prevent people from approaching the site of a bomb attack on a security forces vehicle in Fateh Jang June 4, 2014. A suspected suicide bomber attacked the Pakistani security forces vehicle in Rawalpindi, home to army headquarters, on Wednesday, killing five people including two officers, a military source said. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
Police stand guard near the site of a bomb attack on a security forces vehicle in Fateh Jang
Police stand guard near the site of a bomb attack on a security forces vehicle in Fateh Jang June 4, 2014. A suspected suicide bomber attacked the Pakistani security forces vehicle in Rawalpindi, home to army headquarters, on Wednesday, killing five people including two officers, a military source said. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
A security forces vehicle is removed from a site after it was attacked by a suspected suicide bomber in Fateh Jang
A security forces vehicle is removed from a site after it was attacked by a suspected suicide bomber in Fateh Jang June 4, 2014. The suspected suicide bomber attacked the Pakistani security forces vehicle in Rawalpindi, home to army headquarters, on Wednesday, killing five people including two officers, a military source said. REUTERS/Faisal Mahmood (PAKISTAN - Tags: POLITICS CIVIL UNREST)
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Two Pakistani soldiers killed in Taliban cross-border attack
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Female supporters of Pakistan's MQM political party, chant slogans to show solidarity with their leader Altaf Hussain in Karachi
Female supporters of Pakistan's Muttahida Quami Movement (MQM) political party, chant slogans to show solidarity with their leader Altaf Hussain in Karachi June 4, 2014. Exiled Pakistani politician Altaf Hussain, one of the most divisive and feared figures in Pakistan, was arrested in London on Tuesday, his party said, sparking fears of a violent backlash in Pakistan and sending the country's biggest city into lockdown. REUTERS/Akhtar Soomro (PAKISTAN - Tags: POLITICS CIVIL UNREST)