Officials reported on Tuesday that at least 19 people died in the city of Sorong in the Indonesian province of West Papua during street clashes that erupted between two groups of locals.
The clashes led to a fire outbreak in a nightclub.
According to the Indonesian news agency, Antara, a total of over 300 people in two groups engaged in an overnight clash and set the nightclub on fire.
One individual was stabbed to death in hostilities and 17 others died in the fire outbreak, the outlet reported.
The police have yet to identify the bodies of those burned, but the victim of the knife stab has been identified.
A probe was ongoing to determine instigators and perpetrators of the violence, especially those responsible for the deaths as well as the causes of the clashes.