Unidentified gunmen fired at a bus on a road leading to Freeport McMoran Copper & Gold Inc's (FCX.N: Quote) mine in Indonesia's Papua province, police said on Sunday. It is the second time since Wednesday that a Freeport bus has been fired upon and follows a series of shootings last month, in which an Australian technical expert and a Freeport security guard were killed and several others injured. "The shooting is true, but there's no details on the incident yet," said Agus Rianto, Papua police spokesman. "I don't know if the bus was empty or not." Officials from the company were not immediately available to comment. Indonesian news agency Antara reported that five people were injured by glass shrapnel in the latest attack but did not give a source for the information. Last month, the police arrested eight suspects, two of whom were working for Freeport, over a recent spate of shootings near Freeport's enormous Grasberg mine. The Grasberg mine, about 3,400 km (2,100 miles) east of Indonesia's capital of Jakarta, has the world's largest recoverable reserves of copper and the largest gold reserves. The mine has been a source of frequent friction over its environmental impact, the share of revenues going to Papua and payments to Indonesian security forces who help guard the site. Secessionists have waged a low-level insurgency for decades in Papua. The Indonesian military and police, which keep a tight rein on the area, have rejected accusations that the recent unrest is linked to conflict over their commercial interests near the Grasberg mine

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