No injuries or damage has so far been reported on Lomblen island which is home to more than 100,000 people.
Videos have been shared on YouTube, showing the Lewotolo volcano on Lomblen island in southern Indonesia erupting and spewing smoke and ash into the sky.
Footage shows people, some of them with little children in their arms, running in panic from the area surrounding the volcano.
According to Volcano Discovery, seismologists had warned local residents about a high level of activity at the Lewotolo volcano and advised that they use face coverings to protect their respiratory system from particles of ash in the air.
Poster Comment:
Ash in air from volcano blocks sunlight, kills crops, spikes food prices and causes famines. Closer it is to the equator the worse it is in terms of blocking light.