New Delhi, Oct 7 (ANI): The Surat Police on Monday issued a lookout notice against controversial self-styled godman Asaram Bapu's son Narayan Sai. The latest development in this regard comes a day after fresh sexual assault complaints were registered against Asaram and Narayan Sai in Surat. According to reports, two sisters have lodged rape cases against Asaram and Narayan Sai alleging sexual assault between 2002 and 2004. According to the FIR, Asaram raped the elder sister at Ahmedabad ashram and his son raped the younger one in Surat between 2002-04. Asaram, 72, was arrested on September 1 on allegations of sexual assault on a minor at his ashram in Jodhpur and is currently in jail.