Pakistan reeling after IS attack on shrine kills 88

At least 20 children among the victims of 'well-planned' bombing in Sehwan

Pakistan launched a nationwide security crackdown on Friday after a bomb ripped through a crowded Sufi shrine, killing 88 people and leaving hundreds wounded.

Police cordoned off the shrine of Lal Shahbaz Qalandar, a 13th century Muslim saint, as forensic investigators reached the town of Sehwan in Sindh province, some 200 kilometers northeast of financial hub Karachi.