The oil and gas giant ExxonMobil says it is continuing to monitor tension in Angore in Papua New Guinea's Hela Province.
The company has confirmed that vandalism has been sustained to heavy equipment and some camp buildings at its LNG gas project site at the Angore well pad A last week.
Hela police said there was a second vandalism attack at the weekend, with burning of buildings, although no one was reported as injured.
Police said the attacks were carried out by Hela landowners who are frustrated that they still haven't been paid promised project royalties, four years after the project began exports.
PNG's government has urged landowners to give it time to complete a clan vetting process to determine which landowners should get paid.
ExxonMobil PNG has condemned what it calls acts of criminal vandalism against its assets, describing them as totally unacceptable.
"We encourage all parties to work together to ensure issues are being worked through in a peaceful and constructive manner," an Exxon spokesperson said.
She added that the project's Hides Gas Conditioning Plant is continuing to operate normally.