At least seven people were injured after unidentified men threw a hand grenade on Samungli Road in Quetta, police said.
According to DIG Quetta, the police were investigating the intensity of the explosion.
Rescue sources said that the injured included two children and five laborers. The heavy contingents of law enforcement agencies and ambulances reached the scene. The injured were shifted to a nearby hospital for medical attention.
The law enforcers cordoned off the area and began collecting evidence. A search operation was launched to arrest the culprits.
Earlier in September, four people were injured in a blast outside a mosque on Quetta’s Sariab Road.
The blast happened right after Friday prayers, and the injured were taken to the Civil Hospital for treatment.
Plumes of smoke were seen coming out of a blazing motorbike after the explosion.
The nature of the explosion was being investigated as the officers could not ascertain whether a bomb was planted or a motorbike caught fire, said Quetta Deputy Inspector General (DIG), Abdul Razzaq Cheema.
However, another officer claimed that there were 1-1.5 kilograms of explosives next to the bike, and the blast was a result of the denotator blowing up. He added that the explosives themselves did not catch fire, preventing more destruction.