 Complete the following phrase:  In February 2010, while Ahmed was preparing to run for the seat of National Assembly in by-election in NA-55, Rawalpindi, he was attacked by unknown gunmen at his election office in Rawalpindi. It was believed Taliban militants were behind the attack which injured Ahmed and killed three others known to be his bodyguards.ref namedawn9feb2010ref Ahmed earlier supported President Musharrafs military operation against the militants in Federally Administered Tribal Areas and the 