A 64-year old woman died of COVID-19in Tamil Nadu on Tuesday taking the toll due to the disease to seven in the state while 69 more people tested positive as the tally rose to 690, a top health department official said.The woman, who died at the Rajiv Gandhi Government General Hospital here, had co-morbid conditions like hypertension and diabetes, Health Secretary Beela Rajesh said.With this, the number of COVID-19 deaths in the state has risen to seven.Of the new positive cases, as many as 63 were returnees of the jamaat meet held in Delhi's Nizamuddin area recently, she said.