Indonesian officials have imposed a 12-km (7.5-mile) exclusion zone around the volcano, whose last eruption in 1963 killed over 1,000 people and destroyed several settlements.
A woman and child sit in a tent at a temporary evacuation center for people living near Mount Agung, outside a sports arena in Klungkung, on the resort island of Bali, Indonesia.
Just yesterday, we reported that Bali's Mount Agung is on the verge of eruption.
Mount Agung volcano is seen in Amed, Bali on September 26.
Indonesia has about 120 active volcanoes. Indonesian authorities raised the alert level for the volcano to the highest level, as almost 50,000 villagers around the mountain evacuated their homes.
Mount Agung volcano in Karang Asem district has been in the highest alert level as its seismic energy is increasing and has the potential to erupt, spokesman from the national disaster management agency Sutopo Purwo Nugroho said.
It could be just a "matter of hours" before Mount Agung in Bali erupts, as the area is experiencing unprecedented levels of seismic activity, Indonesia's volcanology centre said, according to The Guardian.
At 11am BST EMSC, an independent scientific organisation that provides real-time natural disaster warnings, tweeted: "Strongest quake so far while the volcano may be about to erupt. This ensures that if an eruption occurs while the aircraft is en route, we will be able to get guests back to their originating port safely and quickly", the airline said in a travel alert.
The UK, Australia and the U.S. are among several countries that have issued travel advisories in recent days, warning that volcanic activity on Agung could interfere with travel plans.
Australians are being advised to check with their airline before flying and to follow all authorities and hotel staff instruction if travelling to Bali.