Injuries in Tonga are currently unknown after a four-foot tsunami wave hit the Pacific island nation on Saturday, triggered by an underwater volcano eruption. Information has been slow to get out due to a disruption to communications. Australia’s Bureau of Meteorology said the Hunga Tonga-Hunga Ha’apai volcano erupted at 5:10 p.m. local time on Saturday, and tsunami waves have been observed as a result of the eruption. A tsunami warning has also been posted for certain coastal areas of surrounding Pacific nations. Japan’s meteorological agency reported a four-foot tsunami wave in Amami Oshima, with smaller waves reported along other areas of Japan’s Pacific Coast. Hundreds of thousands of Japanese citizens were advised to evacuate on Sunday as waves of more than a metre hit coastal areas, public broadcaster NHK reported. Around 230,000 people were advised to evacuate across eight prefectures due to the tsunami risk, NHK reported. The alert included areas hit by the …