A 7.7 magnitude earthquake strikes off Russia's Kamchatka Peninsula, west of the Alaskan Aleutian Island of Attu, in the North Pacific Ocean. No immediate reports of casualties or damage; a tsunami warning was cancelled.
The United States Geological Survey (USGS) reports a 7.7 magnitude earthquake has struck off the Northern Mariana Islands in the Pacific Ocean. The Pacific Tsunami Warning Center says there is no tsunami threat because the quake was very deep in the earth.
Police investigate a blogger Teacher Wang for fraud after he predicts a magnitude-14 earthquake and 170m (560ft) high tsunami is to strike Taiwan on 11 May, toppling the Taipei 101 skyscraper and Presidential Office building. The prediction is removed from the internet.