About 1,500 people are being evacuated from islands off Papua New Guinea, where a long-dormant volcano has started erupting, the Red Cross says.
Then Kadovar exploded, causing glowing rocks and sulphur dioxide to be launched into the sky, according to the Rabaul Volcanological Observatory.
A dome of lava was also observed in the sea at the base of thick white steam clouds that were rising to nearly 2,000 feet above sea level, according to the latest bulletin of the Rabaul Volcanologist Observatory quoted in Reuters.
Chris Firth, a vulcanologist at Macquarie University, detailed that this is the first confirmed eruption report to come from Kadovar.
All residents of the island have been evacuated with no loss of life, US-based charity Samaritan Aviation, which operates seaplanes to remote areas of PNG, said on Facebook.
The Kadovar volcano is located 15miles from Papuan mainland.
Rabaul Volcano Observatory volcanologist Steve Saunders said further eruptions in nearby volcanic islands were "unlikely", whereas a tsunami triggered by seismic activity at Kadovar was a possibility.
It said: "Due to the steepness of the island, landslides are possible, and together with the explosive nature of the magma, tsunamis may be generated".
Cheyne O'Brien, a forecaster at the Advisory Centre said: "It's just a continuous emission of volcanic ash at the moment". "The clues are darker and increasing at an alarming rate".
Papua New Guinea (PNG) is home to a number of active volcanoes.
That prompted the evacuation of 590 people on Kadovar to the nearby island of Blup Blup.