Mount Empung, together with Mount Lokon, is a twin volcano (2.2 km apart) in the northern Sulawesi, Indonesia. Both rise above the Tondano plain and are among active volcanoes of Sulawesi. Mount Lokon has a flat and craterless top. Mount Lokon last erupted in 1991. Among the dozens of volcanoes in Indonesia it is one of the most active.
Among them Mount Lokon started erupting at around 2230 local time (1530 GMT) on Thursday and continued to spew ash and searing gas into the air well into the morning, prompting more than 4,400 residents to head to safety. Grass and shrubs within 500 metres of the crater caught fire.
The last month has seen a significant rise in volcanic activity in the area, and the alert status was raised to the highest level just days ago.
Thousands of people on an Indonesian island have been forced to flee a fierce volcanic eruption.
There were no immediate reports of casualties. The eruption saw ash, sand and rocks thrown 1,500m (4,800ft) into the air. A 3.5-km (two mile) evacuation zone was established last weekend, within which around 28,000 people live, of whom 4,400 have been moved so far mentioned earlier.