Najib was arrested by MACC at 4.13 pm yesterday over a 1Malaysia Development Bhd (1MDB) case involving the alleged deposit of RM2.6 billion into his personal account.
He is expected to be charged at a court in Kuala Lumpur at 3 pm today.
Media members, who had been waiting at the MACC headquarters since 6 am, were only able to capture the black MPV Alphard, with Najib inside, leaving the compound.
Najib is believed to be taken to the Anti-Money Laundering Unit of the Royal Malaysia Police at Menara KPJ, Jalan Tun Razak, where the police would record his statement to assist investigation under the Anti-Money Laundering, Anti-Terrorism Financing and Proceeds of Unlawful Activities Act 2001 before taking him to court.
The former prime minister had been charged previously on seven counts.
On July 4, he pleaded not guilty in the Kuala Lumpur High Court to three charges of criminal breach of trust and one charge of abuse of power involving funds amounting to RM42 million belonging to SRC International Sdn Bhd.
On Aug 8, he pleaded not guilty in the Kuala Lumpur High Court to three charges of having received RM42 million in proceeds from unlawful activities into two of his accounts four years ago, with the money belonging to SRC International Sdn Bhd.