At least 31 people are killed in the blasts across Pakistan , police say . Police : The deadliest blast killed 23 people in Karachi . The attacks primarily target Shiites participating in religious observances . The Pakistani Taliban claimed responsibility for three bombings .
At least 31 people are killed in bomb blasts across Pakistan , police say . Police : The deadliest blast killed 23 people in Rawalpindi . The bombings primarily target Shiites participating in religious observances . The Pakistan Taliban claimed responsibility for three blasts .