At least three persons including member of peace committee was killed along with his son and nephew when a roadside improvised explosive device went off at Zindikhel here on Wednesday, police said. According to spokesman of Hawaid police station, the vehicle of tribal elder and member of peace committee, Malik Hashim Khan was targeted with remote control bomb planted on roadside when he reached at Zindikhel area. As result, Hashim Khan, his son and nephew were killed on the spot. Police have cordoned off the area and started investigation.