Australian packaging group Amcor has agreed to settle a lawsuit brought by Cadbury for overcharging on packaging.

“Cadbury Australia and New Zealand is pleased that a confidential settlement has been reached in its long-running litigation action against Amcor,” Cadbury spokesman Daniel Ellis says. He wasn’t able to give details on the exact settlement.

Cadbury Schweppes sued Amcor after the packaging group’s board alerted Australia’s competition regulator in 2004 that employees at Amcor had been involved in price fixing on cardboard boxes with privately owned Visy Group for nearly five years.

Amcor won immunity from prosecution for blowing the whistle on the cartel, while Visy was found guilty and fined AU$36 million (€20m), a record penalty for cartel activity in Australia.