Most of the casualties occurred when a bomb destroyed a crowded billiard hall in Quetta.
A series of bombings in different parts of Pakistan killed 103 people on Thursday, including 69 who died in a sectarian attack on a bustling billiard hall in the southwest city of Quetta, officials said.
The blasts punctuated one of the deadliest days in recent years in Pakistan, where the government faces a bloody insurgency by Taliban militants in the northwest and Baluch militants in the southwest.
The country is also home to many enemies of the US that Washington has frequently targeted with drone attacks. A US missile strike Thursday killed five suspected militants in the seventh such attack in two weeks, Pakistani intelligence officials said.
The billiard hall in Quetta, the capital of Baluchistan province, was hit by twin blasts about 10 minutes apart on Thursday night, killing 69 people and wounding more 160 others, said senior police officer Hamid Shakeel.