© Getty ImagesMount Merapi volcano as seen from Balerante village in Klaten, Indonesia, 29 October Mount Merapi is the most active of Indonesia's volcanoes
Mount Merapi volcano has erupted for a third time, with local people reportedly saying this was louder and stronger than the previous eruption on Tuesday.
The latest eruption happened at around 0100 on Saturday (1800GMT Friday).
Agence France Presse reported that it caused panic, with hundreds of people, including police and soldiers, trying to flee in cars or on motorbikes.
Ash was raining down in Yogyakarta, about 30km (19 miles) away.
Matt Burgess, a photography student from Australia, is in Yogyakarta. He told the BBC: "I was in a nightclub when a friend called to say there was a load of ash. I went outside and saw ash falling like snow."
But authorities say Yogyakarta is safe. The head of the monitoring body has said the risk remains lmited to the 10km zone around the mountain.
Nearer that zone, though, people felt more in danger.