The Malaysian Anti-Corruption Commission has submitted two investigation papers on former 1MDB subsidiary, SRC International, and one investigation paper on Prime Minister Najib Abdul Razak's RM2.6 billion donation to the attorney-general Mohamad Apandi Ali today.

MACC deputy commissioner (operations) Shukri Abdul said the graftbuster has made several recommendations for action to be taken on these two cases.

However, he said the RM2.6 billion probe is still incomplete.

"The MACC still needs to complete investigations regarding documents and statements involving several overseas financial institutions.

"These documents and statements can only be taken through mutual legal assistance (MLA) as this is tied to the banking laws of the countries involved," Shukri said in a statement today.

He said the MACC has already filed a request with the AG to get the MLA.

On the SRC investigation papers, Shukri said the commission took statements from more than 100 witnesses.

The investigation papers were then presented to an independent panel, before they were sent to the AG.

The panel members were former inspector-general of police Musa Hassan, former appellate court judge Mohd Noor Abdullah, former deputy bank negara governor Zamani Abdul Ghani, former Bar Council president Lim Chee Wee, and defence lawyer Zuraida Atan.

"These panel members have given the MACC good feedback and suggestions," Shukri said.

The RM2.6 billion issue first emerged in July when The Wall Street Journal reported that the money was channelled into Najib's personal bank accounts.

Also channelled in Najib's accounts, the report claims, is RM42 million that supposedly originated from SRC International.

Najib has denied any wrongdoing.