Student returning from Saudi Arabia lone new Covid-19 case in state quarantine By THE NATION     There was one new confirmed case of Covid-19 infection but no death over a 24-hour period, the assistant spokesperson for the Centre for Covid-19 Situation Administration, Dr Panprapa Yongtrakul, said on Saturday (May 30).     The 26-year-old student had returned from Saudi Arabia, and tested positive while in state quarantine. The man is being treated in Narad