Authorities closed the local airport and issued a warning to all aircraft flying in the area, according to the APE-MPE.
The blast did not cause any injuries or damage in this isolated area of the archipelago in Southeast Asia. However, the alert level rose to the second highest level, with experts warning that lava flows may be observed.
Authorities barred access to a four-kilometer radius around the crater and asked aircraft not to fly near the area because of the volcanic ash.
Indonesia is located in the "fire zone", one of the three regions of the planet where high seismic activity is recorded and has about 130 active volcanoes.
At the end of 2018, a volcano erupted between the islands of Java and Sumatra, causing an underwater landslide and the tsunami that followed, killing more than 400 people.