The bomb was planted near an ice cream shop in the Pashtoonabad locality on the outskirts of Quetta and went off when there was a crowd of people.
The blast damaged several nearby shops and residences.
Rescue and emergency teams rushed to spot and the injured have been shifted to hospitals.
"More than 15 injured are brought to civil hospital Quetta for treatment," Dawn online quoted Rasheed Jamali, a doctor on duty, as saying.
According to an official of the bomb disposal squad, over two kg of explosive materials were used in the blast, the Dawn report said.
--IANS (Posted on 19-12-2013)