Protesters in Indonesia's easternmost region of Papua set buildings ablaze in the provincial capital Jayapura on Thursday, forcing the state power firm to cut off electricity in some districts, state media and an executive of the utility said.

Police fired tear gas to disperse demonstrators who also set fire to cars and threw stones at shops and offices, state news agency Antara said. Protesters also torched a local parliament office.

"Several public facilities and properties were damaged by rioters," national police spokesman Dedi Prasetyo said.