Indonesian authorities ordered people living near a volcano to leave their homes on Friday and a major city closed its airport after the 5,500 metre (18,000 ft) peak sent a column of steam and ash into the sky.
The Mount Merapi volcano on the densely-populated Java island is one of the most active volcanoes in Indonesia and a series of eruptions in 2010 killed more than 350 people.
A disaster mitigation agency told residents living within a 5 km (3 mile) radius of the mountain to move to shelters, agency spokesman Sutopo Purwo Nugroho said in a statement.