TOKYO: A powerful 7.5 magnitude earthquake struck off northern Japan late Monday, injuring 23 people and triggering a tsunami in Pacific coast communities, officials said. Authorities warned of possible aftershocks and an increased risk of a megaquake. The Japanese government was still assessing damages from the tsunami and late-evening quake, which struck at about 11:15 p.m. in the Pacific Ocean, around 80 kilometers (50 miles) off the coast of Aomori, the northernmost prefecture of Japan’s main Honshu island.

A 7.5 -magnitude earthquake struck the northernmost prefecture of Japan's main Honshu island on Monday night, and tsunami warnings were lifted several hours later.

This is the moment a powerful 7.5-magnitude earthquake strike Japan. The earthquake on Monday (8 December) injured at least 33 people and produced widespread tsunami warnings,…