Mount Agung

Tens of thousands of people stayed put near Mount Agung after an alert was raised to its highest level.

Some still felt safe while others did not want to leave livestock.

A spokesman for the country's National Disaster Management Agency (BNPB) said people were checking the exclusion zone for non-evacuees.

"There are personnel doing the sweeping, if they [residents] need to be forcibly evacuated," Sutopo Purwo Nugroho said.

The island's airport has now closed, leaving thousands stranded in the tourist hotspot.

It is the second major emission from the Indonesian island's volcano this week, and flights have been disrupted.

The red warning means an eruption is forecast to be imminent, with significant emission of ash into the atmosphere likely.

Volcanic ash can damage plane engines.

Bali is a major tourist hub. Its main airport is for now operating normally, but some airlines have cancelled flights since volcanic activity was first noticed in September.

The area around Mount Agung has seen hundreds of tremors and signs of magma rising to the surface in recent days.

Authorities have imposed a 12km (7.5-mile) exclusion zone around the mountain and issued their highest level alert on Friday.

The island's main tourist areas and flights remain unaffected for now.

Indonesia's national volcanology centre said in a statement (in Indonesian) on Sunday night that the mountain's "seismic energy is increasing and has the potential to erupt".

What's happening at Mt Agung?