CPI(M) general secretary Sitaram Yechury on Thursday said his elder son Ashish died of COVID-19 in the morning. Ashish Yechury, who would have turned 35 on June 9, was recovering well at Gurgaon's Medanta Hospital, people close to the family added, describing his sudden death at 5.30 am after a two-week battle with the disease as a shock.