At least 31 people have been killed and more than 20 injured in an explsion in Quetta's Eastern Bypass area on Wednesday, officials said.
According to Dawn News, police officials and civilians are among the dead. Eight of the wounded are reportedly in a critical condition.
The Inspector General Police Quetta Mohsin Butt told Dawn News TV that the attack appeared to be a suicide blast.
The explosion occurred near a school in Quetta where voting was taking place, leaving 31 people dead and more than two dozen people injured, Deputy Inspector General (DIG) CTD Aitzaz Ahmed Goraya said.
Voting has been stopped at the school for now, Dawn News reported.
Thousands of people started flocking to the polls early Wednesday as the 2018 general elections got underway.
However a number of target killings and bombings have taken place in the country in the lead up to the elections.