The largest lender in the Pacific, BSP Financial Group, has been ordered to remove senior managers following breaches of anti-money laundering laws in Papua New Guinea, putting further pressure on Commonwealth Bank of Australia and National Australia Bank to cut ties with the troubled institution.

BSP, which listed on the ASX in May and trades as the Bank of South Pacific, was found by the PNG regulator to have committed dozens of violations of anti-money laundering laws, running to thousands of individual breaches.