Jakarta – With activities resuming at PT Freeport Indonesia's mine in Papua, activists called for the release of Papuan students detained for vandalizing a Jakarta high-rise that is home to the gold and copper company's Jakarta office.

"We are very pleased to report that the situation at the Grasberg Mine in Papua has been resolved peacefully and our operations resumed at approximately 6 p.m. on Saturday," spokesman Siddharta Moersjid was quoted as saying by Reuters.

Operations at the Grasberg mine, believed to have the world's third-largest copper reserves and one of the biggest gold deposits, were suspended Wednesday after illegal miners armed with bows and arrows clashed with security officers, soldiers and police the day before after a dispute over their sifting through the company's tailings.

Siddharta said that only one individual – a security officer for Freeport Indonesia – had been hurt. He said losses due to the disruption had not been determined. "There are a number of factors needed to be taken into consideration," he said, without elaborating.

After reaching an agreement with the company, protesters obstructing access to the site left on Saturday after conducting a tribal ceremony. The Freeport spokesman said the protesters had wanted to benefit from the initiatives and programs established by the company for locals in the vast province of Papua.

Meanwhile, a human rights activist demanded the immediate release of nine students held after an early morning attack Thursday on Plaza 89 office building in Kuningan, South Jakarta.

"The legal matters in Jakarta cannot be separated from incidents in Papua," coordinator of the Commission for Missing Persons and Victims of Violence (Kontras) Usman Hamid was quoted as saying by Antara news service. "If activities have returned to normal in Timika, there must be the consideration to free these students in Jakarta."

Usman said the regional government and legislators were partly to blame for the frequent disputes between locals and the mining company because they had not striven to overcome misunderstandings between the communities.

He said he did not condone the student's use of violence but added the incident, sparked by reports of the shooting of three civilians during a protest Tuesday, resulted from a buildup of "disappointment" at the allegedly high-handed approach of security forces in dealing with locals.

A total of 13 students went to the Kontras office after the attack at the office building. The students, at the urging of Kontras, later turned themselves in to the Central Jakarta Police. Police named nine out of 13 people suspects in damaging property and the remaining four would only become witnesses.