HYDERABAD: Retired IAS officer Simha S Jayarao, 94, passed away at his home in Hyderabad during the early hours of Sunday.Jayarao was a student of Nizam College. He was a part of the Andhra Pradesh cadre and served as Registrar-General of Census for Andhra Pradesh. He is survived by his son Ajaya, daughter Arundhati and daughter-in-law Tara. Due to restrictions arising out of Covid-19, the family said it will not receive any visitors.