A union official, Virgo Solossa, says Indonesian police have shot a protester dead during a clash with striking workers at the huge Freeport McMoran mine in Papua.
Another union leader, Sudiro, told the Jakarta Globe that three other miners had been critically wounded.
Freeport is yet to comment.
A police spokesperson told the paper that at least six police officers were injured in the violence at the sprawling Grasberg complex, one of the world's biggest gold and copper mines.
A doctor at the Mimika district government hospital, Dr Hery, confirmed that one person was killed by a gunshot.
Mr Solossa says the clash erupted when police tried to stop more than 1,000 workers, who began their strike on September the 15th, from entering a facility at the mining complex.