The Tokyo metropolitan government confirmed 3,300 daily coronavirus cases Friday as the capital, where the Olympics are being held, is experiencing a surge in infections.

The figure compares with 3,865 marked Thursday when it reported a record figure for the third straight day.

The capital's seven-day rolling average of cases has risen to 2,501.4 per day, up 80.5 percent from the previous week.

The central government has placed Tokyo under a fourth state of emergency, mostly relying on a cooperative public and not imposing a hard lockdown as in some countries, from July 12.

Although foot traffic in downtown areas has slightly decreased, the surge in infections comes amid the spread of the highly contagious Delta variant of the coronavirus.