Four earthquakes, all above magnitude 4, hit near Port Blair in the Andaman region of the Bay of Bengal within 90 minutes on Tuesday night. The first quake measured 5.0 at a depth of 10 km, followed by three others ranging from 4.6 to 5.0 magnitude. No casualties or tsunami warnings have been reported. Meanwhile, a powerful 8.8 magnitude earthquake struck Russia’s Kamchatka Peninsula, prompting tsunami alerts across the Pacific region.