Malaysia's central bank has had some progress in taking action against 1MDB with regards to approvals given to the state fund, Bank Negara governor Zeti Akhtar Aziz said today.

"We have already, as I had mentioned, completed our investigations and now there is some progress in the actions that are being taken, relating to some of the approvals we have given them (1MDB)," Zeti said to reporters after officiating the Leadership Energy Summit Asia in Kuala Lumpur.