QUETTA (APP) - A man committed suicide after killing his four children due to domestic disharmony here Saturday, the police said. According to reports, Advocate Sulman son of a senior police official shot himself dead after killing his four children an eighteen-month-old Saira, three-year-old Manahil, five-year-old Saleh and seven-year-old Saad. Area police registered a case and started investigation.