Bombs in three cities in Pakistan killed at least 17 people and left many more injured on Wednesday.
In Rawalpindi, a explosion during a Shia Muslim procession killed 10.
Earlier, a bomb outside a Shia mosque in the southern city of Karachi killed at least two people.
And a roadside bomb attack on a military vehicle killed at least three soldiers and two civilians in Quetta. Police said the target was an army vehicle which was escorting a school bus.
Shias are celebrating the holy month of Muharram.
The BBC reports no group has so far claimed responsibility.