The death toll has gone up to 80 Quetta, Pakistan after a deadly blast the day before.
Children were amongst the dead after an improvised explosive devise went off Saturday in the town's main bazaar near a school and a computer center.
Officials say the death toll could rise as there are at least 20 hospitalized with severe wounds.
A Sunni extremist group that officials say is a formidable force in the region has claimed responsibility for the attack.
The growing sectarian violence is yet another hurdle for the government already plagued by an inability to takle corruption or economic stagnation.
Intelligence officials say Sunni extremists have escalated their attacks on Shi'ites to trigger violence that would pave the way for a Sunni theocracy.
At least 80 dead in Pakistan blast (0:50)
Feb. 17 - Death toll rises after deadly bomb attack in western Pakistan. Julie Noce reports. ( Transcript )