Anti-graft organization Indonesian Corruption Watch will report the subsidiary of US mining giant Freeport-McMoRan to the US Department of Justice next month for involvement in a bribery case.

"We're drafting the report and we will send it in one or two months," deputy chairman of ICW Adnan Topan Husodo said during a national seminar on corruption on Thursday. He said that US law does not allow US companies operating in other countries to take part in bribery.

Human rights group Imparsial revealed that police received $64 million from Freeport between 1995 and 2004. National Police spokesman Gen. Timur Pradopo verified the payments, calling them "lunch money." Timur promised an audit.

"Even though it is being called a grant from Freeport, it was not supposed to be given to the National Police," Adnan said. "The security budget should be given to the state budget because the National Police are a government institution funded by the state budget, instead of by a private company."

Adnan said receiving money outside of the state budget equaled bribery. "Letting the police receive 'security payments' from private institutions will disrupt police independence," he said.