An Islamic State suicide bomber struck inside a famed shrine in southern Pakistan on Thursday, killing at least 75 people in the deadliest attack in the country in more than two years. The bomber entered the main hall of the shrine of Lal Shahbaz Qalandar in Sehwan and detonated his payload amid dozens of worshippers, according to three security officials, who said at least 20 women and nine children were among the dead.