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FILE - This Friday, Nov. 23, 2001 file photo shows former Afghan President Burhanuddin Rabbani as he emerges from the Pul-e-Khishti mosque after Friday prayers, surrounded by United Front bodyguards and supporters, in the capital Kabul, Afghanistan. A Kabul police official said Tuesday Sept. 20, 2011 that former Afghan President Burhanuddin Rabbani was killed by a suicide bomber who had explosives in his turban. A presidential spokesman says Afghan President Hamid Karzai is cutting short his trip to the United Nations in New York to return to Kabul. (AP Photo/Brennan Linsley)

Ex-Afghan President Burhanuddin Rabbani killed

The head of Afghanistan's High Peace Council, former President Burhanuddin Rabbani, who had been tasked with trying to negotiate a political end to the war, was killed at his home on Tuesday, a senior police officer said. (AP)