Confusion remains over how many people have been killed and wounded near the Grasberg mine in the Timika area in Papua.
There are reports that more shootings have taken place targetting employees of a US mining company, Freeport.
Gunmen ambushed a convoy of Freeport vehicles on the sole road from the coast to the mine, killing at least two people.
A series of ambushes killed three people on the same road earlier this month.
Radio New Zealand International reports there is widespread concern over the police investigation, which now also involves the Indonesian military who are considered by some as suspects in the attacks.