The Australian government has warned of a risk of further violence near the Freeport-operated mine in Indonesia's Papua province.
At least three people, including an Australian mine worker, have been killed and more than a dozen wounded in a series of ambushes near the Grasberg mine in recent weeks.
Australia's Department of Foreign Affairs and Trade has updated its travel advice for Indonesia, warning "further violence is possible".
Police say at least seven people will face trial over this month's attacks, although it remains unclear who the perpetrators are.
Media reports from Indonesia have said the key suspects in the attacks are local Papuans.
