Chennai: Police who registered a case of suicide in the October 14 death of a 37-year-old electrician have now altered the case and launched a hunt for Manali-based construction firm owner Shanmugasundaram, his son Rishi and their employees Vadivel and Sundaramurthy for abetting the suicide of V Saravanan.Their involvement came to light after doctors who performed the autopsy of Saravanan, found...