At least 20 people were killed on Monday, including three shot by police, in violent protests by hundreds of people sparked by rumours that a teacher insulted an indigenous student in Indonesia’s restive Papua province, officials said.

An angry mob torched local government buildings, shops and homes and set fire to cars and motorbikes on several roads leading to the district chief’s office in Wamena city, Papua police chief Rudolf Alberth Rodja said.

Papua military spokesman Eko Daryanto said at least 16 civilians, including 13 from other Indonesian provinces, were killed in Wamena, mostly after being trapped in burning houses or shops.

He said at least one soldier and three civilians died in another protest in Jayapura, the capital of Papua province.

About 65 civilians were injured in Wamena and five police officers were critically injured in Jayapura, he said.

Television video showed orange flames and black smoke billowing from burning buildings in Wamena.

23/9/19 Wamena, West Papua

Regent’s office is burnt down pic.twitter.com/PJtghCN98O

— Veronica Koman (@VeronicaKoman) September 23, 2019

Rodja said the protest was triggered by rumours that a high school teacher in Wamena, who is not from Papua, called an indigenous Papuan student a “monkey” last week.

He said a police investigation did not find any evidence of racism against the student, and that false rumours have been spreading among students in other schools and native communities.

“We believe this false information was intentionally designed to create riots,” Rodja told reporters in Jayapura, the capital of Papua province.

“This is a hoax and I call on people in Papua not to be provoked by untrue news.”

Papua police spokesman Ahmad Musthofa Kamal said students from another school in Wamena who refused to join the protest brawled with another group of students.

Video circulated on the internet showed dozens of people, many armed with machetes, standing in front of their shops and homes to protect them from the angry mob.

Joko Harjani, an airport official, said the protest forced authorities to close the city’s airport until the situation returns to normal.

The protest came days after Indonesian authorities managed to get the province under control after weeks of violent demonstrations by thousands of people in Papua and West Papua provinces against alleged racism toward Papuans.

At least one Indonesian soldier and four civilians were killed in that violence.

Papua was a Dutch colony that was incorporated into Indonesia after a controversial UN-backed referendum in 1969, but the region continues to witness separatist conflict.

-AAP