A student from Hyderabad has been shot dead by unidentified gunman in the US. Sai Kiran Goud was killed by a group of unidentified men in Miami, Florida, on Sunday.The 21-year-old was apparently waylaid by a group of suspected robbers when he was on a call. When he refused to handover his iPhone, a gunman opened fire, killing him instantaneously.Hearing gunshots over the phone, Sai's friend on the other end of the phone immediately called 911.Sai had gone to the US last month and was pursuing his masters in a university in Miami. The news shocked Sai's parents and other family members. A pall of gloom descended on the house of the youth in Kushaiguda area. Sai finished his BTech degree in 2015 from Geetanjali Engineering College, Keesara, and went to Miami on May 2 his year. His father Srihari runs a borewell drilling machinery manufacturing unit at Kushaiguda industrial area.Sai's family has appealed to the Telangana and the central governments to help bring the body home. He is survived by his parents and a younger brother.IANS