At least 18 people were killed and over two dozens were injured when a blast rocked Khanpur Tehsil of the Rahim Yar Khan district of Bahawalpur division on Sunday, rescue sources said. Police sources said that the bomb was planted in electrical transformer. “The investigator have also found ball-bearings from the place. The sources said that the blast occurred near the Imam Bargah near Darkhwasti Chowk of the tehsil. However, RPO Bahawalpur Abid Qadri has claimed that it was an explosion in electrical transformer.