Najib left at 5pm, three hours after he was summoned for questioning today.
They are being questioned over 1MDB’s deal with International Petroleum Investment Co (IPIC) and have been summoned to appear in court.
Both of them arrived at the MACC headquarters here separately this afternoon.
It is believed that both of them will be jointly charged with at least six charges of criminal breach of trust (CBT) involving RM6 billion tomorrow at the Kuala Lumpur Sessions Court.
FMT reported yesterday that the charges are said to be linked to the 1MDB scandal, the East Coast Rail Link (ECRL) and two gas pipeline projects in the peninsula and Sabah.
A source had told FMT that Najib and Irwan were expected to be charged with using approved government allocations to settle 1MDB’s dispute with IPIC.
1MDB agreed to settle a payment dispute with IPIC by making two instalments totalling US$1.2 billion to IPIC sometime in August and December last year.
Najib, who lost power to Pakatan Harapan in the May 9 election, is already facing 32 charges of money laundering, CBT and abuse of power in relation to 1MDB and SRC International.
Irwan’s service contract as Treasury secretary-general was shortened to June 14 and he was transferred to the Public Service Department.