Bhutto's arrival in the country with more than 100 supporters, breaking eight years of self-imposed exile, was met by more than 20,000 police and military troops. Security was tight, after a warning that militants could attempt to assassinate the former leader.
Bhutto is disliked by many traditionalist Pakistanis who consider her rule to have brought the country too close to the United States. Bhutto had told reporters she was "not scared" and was concentrating on her mission, only hours before the attack.
Bhutto, who was traveling from the airport to a rally atop an armoured truck, was unharmed and taken back to her ancestral home of Bilawal House by police and security forces. At least 20 police were killed in the bombing.
Sources indicate there may have been multiple explosions, with a smaller blast preceding the main one, in what CNN's Dan Rivers described as a "large-scale attack". Pakistani Minister of Information Tariq Azim Khan has stated that the attack, which injured another 150 people, was believed to be a suicide bombing.
Bhutto was in the country, having been waived of any corruption charges by President Pervez Musharraf last week, to discuss the possibility of a joint government dedicated to fighting extremism in the volatile country. Bhutto had told reporters that she did not want the country associated with the training of terrorists. - Source: Wikinews.org