A 6.8 magnitude earthquake has hit the sparsely populated southeastern part of Taiwan, derailing train carriages, causing a convenience store to collapse and trapping people on a mountain.
Australian support remains on standby amid concerns an underwater volcano that erupted in Tonga and sparked a tsunami is likely to erupt again in coming days.Â
Tonga has issued a tsunami warning after an undersea volcano erupted, with video posted to social media showing large waves washing ashore in coastal areas.
