Coronavirus cases crossed the 4,000 mark in a single day for the first time in Tamil Nadu on Thursday as the state's overall tally mounted to 98,392 and 57 more deaths pushed the toll to 1,321. Of the 4,343 new cases, Chennai's share alone was 2,027, taking its cumulative numbers to 62,598. As many as 3,095 people were discharged, which is also the highest for a day so far, taking the cumulative recoveries to 56,021. The active cases stood at 41,047. A total of 33,488 samples were tested on Thursday and in total.