The apparent target of the attack was provincial minister Javed Nagori, who escaped unhurt. The bomb was detonated near Nagori's vehicle as he leaving after witnessing a match, a police officer said.
The blast occurred early this morning outside the ground in the impoverished and densely populated Lyari area, which has a tradition of holding soccer matches in the holy month of Ramzan. The bomb was planted in a motorcycle.
"It was a six-kilogram explosive device set off by remote control and the target was apparently the minister," Dharejo said.
"The blast took place just as the minister came out of the ground after watching the football match around the time of 'sehri' but he escaped unhurt," he said, referring to the pre-dawn meal before a day of fasting.
The blast hit people, including children, who were leaving the ground. It also damaged the minister's car, police said.
"It is very sad. This event is held every year because the children love football and want to be a Maradona or Ronaldo despite the conditions in Lyari," he said.
Parents will now be reluctant to send their children to the football ground, he said.
With Eid-ul-Fitr set to be celebrated later this week, security has been tightened across Karachi. However, four blasts outside liquor shops in Defence and Gulshan-e-Iqbal areas last night brought into focus the poor security situation in the city.
