The blast ripped through a congested part of the city, leaving blood and body parts in the street.
Police official Badshah Khan said the bomber, who was on foot, targeted the vehicle of senior investigator Hilal Haider, killing him and a number of his colleagues.
Another officer, Asif Iqbal, told AFP there were six dead including four policemen.
Hospital officials and senior administration official Habibullah Arif said more than 30 people were wounded and some were in critical condition.
Witness Amin Khan described the moment the bomber struck.
“I was in a rickshaw, going to the local market to purchase tea for my shop,” he said.
“Suddenly a deafening blast shook the area. My rickshaw was overturned. When I came out I saw smoke and dust had covered the blast site,” he said.
There was no immediate claim of responsibility for the attack, which came as news of US President Barack Obama’s re-election emerged. Washington is a key focus for the anger of militants in Pakistan.
During his first term as president, Obama ramped up the campaign of drone strikes in northwest Pakistan against militants said to be planning attacks against America and its forces in Afghanistan.
Suicide and bomb attacks blamed on Islamist insurgents have killed more than 5,200 people since July 2007 across Pakistan.
COMMENTS (12)
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First and foremost, our deepest and heartfelt condolences go out to the friends and families of the victims. The terrorists continue to push forward their evil agenda, and it is easy to see that they are preying upon innocent lives to accomplish their evil motives. We will not let these acts of terror break our shared will and desire to defeat terrorism. We stand by Pakistan in its war against terrorism. We are committed to restoring peace in the region, and remain confident of achieving our shared objectives through mutual cooperation.
Unity and strong political will is needed to combat terror. But unfortunately the political leadership lack the courage to take bold decisions.
@immy PTI: imran khan too cant stop the violence....his hopes will continue shattering as he'll keep on getting death threats.........life is dear to everyone....everyone will try avoiding to put it at stake??
Only imran khan will bring change dont vote to PPP noora league only imran khan
its sad indeed!
@Haris Chaudhry: What war ? An isolated incident in a remote corner of Pakistan. Probably an accidental explosion in the fuel tank. Water is highly inflammable.
Why they are fighting each other killing innocent peoples
There can't be more peaceful religion than Islam
Oh God when this war will stopped
Only Jinnah's US-Canada model for India-Pakistan can save Pakistan. I have the whole picture in my mind, but am feeling too lazy to type it all down.
Pakistanis, get out of your death wish, think about the future for your children.
Still not 'our' war ??