The Conference of Rulers has decreed that the investigation into 1MDB be completed as soon as possible and the wrongdoers, if any, be punished.
"The findings of this investigation must be reported in full and transparently, so the people can be convinced of the government's sincerity that it will never hide the facts and the truth.
"Failure to give an explanation and satisfactory answers may cause a confidence crisis," reads the statement from the rulers, issued today by the Keeper of the Rulers' Seal, Syed Danial Syed Ahmad.
"As a result, the rakyat believe, either as reality or perception, that it is one of the main reasons that influenced the ringgit's sharp downfall, which has given a negative impact on the country's financial market and economic climate while affecting the world's view of Malaysia," they added.
In the joint statement as reported by Bernama , the Malay Rulers also asked all responsible parties to give their full cooperation so that the purpose of the investigation is fulfilled.
They said if the 1MDB issue is not dealt with intelligently and continues to drag on, it will damage the economy and the people's welfare.
They fear it may even cause public unrest.
US financial daily The Wall Street Journal has reported that 1MDB funds had made their way into Prime Minister Najib Abdul Razak's personal bank accounts.
Najib, however, denied any wrongdoing or that he had used 1MDB funds for personal gain.