Fourteen people, including three children, were killed, and more than 40 wounded, when a bomb exploded in Quetta, a restive city in Pakistan's southwestern Baluchistan province.

The bomb targeted a madrassa, or religious school, where students and their parents had gathered to attend a graduation ceremony.

While no one group has taken responsibility for the mass killing, Baluchistan is home to several active militant organizations, including the Taliban, as well as a violent Baluchi separatist movement.