Mount Agung has spread drifting ash 7,600 metres (4.7 miles) into the atmosphere and closed the island's international airport for a third day Wednesday.

Indonesia's transportation ministry said on Tuesday it will extend the closure of Bali's I Gusti Ngurah Rai International Airport for a further 24 hours.

Indonesia closed the airport on the tourist island of Bali on Monday and ordered 100,000 residents living near a glowing volcano spewing columns of ash to evacuate immediately, warning that the first major eruption in 54 years could be "imminent."