Hyderabad: Distraught over the health of a mentally-challenged son, a man committed suicide in Hayat Nagar police station limits. 46-year-old, Satta Baju, R/O Choutuppal, was a driver. According to police sources, his mentally challenged son was undergoing treatment. However not finding any improvement in his health, the man went to Hayathnagar bus stop. He doused himself with kerosene and set himself ablaze. Hayathnagar police has registered a case and investigations are on.