Indonesia's Mount Sinabung in North Sumatra province erupted Sunday evening, gushing 4,000 meter-high cloud of ash and smoke into the air, an official said.
There were no immediate reports of casualties, said Sutopo Purwo Nugroho, a spokesman for the National Disaster Management Agency (BNPB).
"The eruption is sending hot clouds about 4,500 meters towards the south-east," dpa quoted Nugroho as saying, adding that the local villagers living at the foot of the mountain have been told to evacuate.
Mount Sinabung has been erupting periodically since September 2013, each time displacing tens of thousands people. There are still 14,382 local residents living in temporary shelters.