NEW : The banned Shiite Muslims militant group Lashkar-e-Jhangvi claims responsibility . At least 83 people are killed and four wounded near Pakistan , police say . A suicide bomber drove between 800 and 1,000 kilograms of explosives into a marketplace . The banned Sunni militant group Lashkar-e-Jhangvi claimed responsibility for the attack , spokesman Abu Bakar Sadeeq told CNN Sunday . Police : The blast targeted Shiite Muslims and destroyed 180 buildings .
NEW : The banned Shiite Muslims militant group Lashkar-e-Jhangvi claims responsibility . At least 83 people are killed and four wounded near Pakistan , police say . A suicide bomber drove between 800 and 1,000 kilograms of explosives into a marketplace . Police : The blast targeted Shiite Muslims and destroyed 180 buildings .