Former premier Najib Abdul Razak's wife Rosmah Mansor has been arrested and is expected to be charged tomorrow.

MACC deputy commissioner (operations) Azam Baki confirmed that the arrest took place at 3.20pm at the commission's headquarters in Putrajaya.

Rosmah had arrived at the MACC headquarters at 11am for her statement to be recorded. It is unclear if she was quizzed on matters related to 1MDB or the fund's former subsidiary SRC International.

“She will be taken to the Kuala Lumpur Sessions Court tomorrow.

“She will face charges under the Anti-Money Laundering, Anti-Terrorism Financing and Proceeds of Unlawful Activities Act (Amla),” Azam told Malaysiakini.

In a statement later, MACC said the arrest was made after receiving the green light from the Attorney-General's Chambers for Rosmah to be charged.

The commission said the former premier's wife would face several charges under Amla.

In an immediate reaction, Najib told Malaysiakini that MACC has not informed them of the charges as yet.

"Yes, she has been arrested. We have not yet been told of the charges. Her lawyers are still unable to gain access to their client as yet," he said.

Meanwhile, outside the MACC premises, Rosmah's lawyer Geethan Ram Vincent also told reporters that he was not informed on how many charges, or their nature, Rosmah will face tomorrow. 

When asked about Rosmah's condition, Geethan who had met her earlier after she was detained said that she was "okay".

On Sept 24, MACC chief commissioner Shukri Abdull said the commission had completed its probe with regards to Rosmah and had submitted its investigation papers to the Attorney-General's Chambers.

This was the third time that the commission called Rosmah for questioning. Last week, she was questioned for almost 13 hours by the anti-graft body.

It was previously reported that Rosmah could face up to 20 criminal charges.

Besides the MACC, the police are also looking to question Rosmah over articles of jewellery seized from residences linked to Najib.