Tokyo shaken by earthquake but Olympics as usual

At around 5.30am Japanese time yesterday, a magnitude 60 earthquake measuring 40 seconds off the coast of Irabaki prefecture measured 40 seconds and lasted 20 seconds to 3 minutes.

However, they say the stadium, which hosts volleyball matches at the Olympics, is designed to withstand a 6.5-magnitude risk.

Japan has built a bulwark to control a tsunami caused by an earthquake measuring 6.5 on the Richter scale near the Olympic Village.