Reports quoted rescuers as saying that the injured were shifted to hospital and the law enforcement agencies have cordoned off the area.
Interior Minister Chaudhry Nisar Ali Khan has strongly condemned the Quetta blast.
Expressing grief and sorrow over the loss of precious lives in the incident, he prayed for the early recovery of the injured.
Punjab Chief Minister Shahbaz Sharif and Chief Minister Balochistan Nawab Sanaullah Khan Zehri have also condemned it.
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