Local media reports said some of the accounts belonged to Najib's political party, the once-powerful United Malays National Organisation (UMNO).
Malaysian anti-corruption agents arrested former prime minister Najib Razak on Tuesday following a probe into how money went missing from a state fund he founded nearly a decade ago, and authorities said he would be charged in court on Wednesday.
Police seized $US273 million (£207 million) worth of jewellery, handbags, watches and other items from six of Najib's properties as part of the investigation last month.
Najib and his cronies were accused of plundering billions of dollars from the 1MDB sovereign wealth fund to buy everything from U.S. real estate to artworks. He has consistently denied wrongdoing.
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Attorney-General Tommy Thomas is set to lead the prosecution team against Najib for offences related to the misappropriation of funds from SRC International Sdn Bhd - a former subsidiary of the scandal-ridden 1Malaysia Development Berhad (1MDB).
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Najib's wife, Rosmah, has also been quizzed by anti-graft investigators in relation to 1MDB and Najib's stepson, Riza Aziz, was giving a statement to the MACC when news broke of Najib's arrest. "They came in three to four unmarked cars", a senior security official familiar with the arrest told AFP. Najib is expected to be formally charged on Wednesday.
Civil lawsuits filed by the U.S. Department of Justice allege that almost $4.5 billion was misappropriated from 1MDB.
On arrival at 3.30pm, the convoy comprising a red Proton Inspira carrying Najib, escorted by five other vehicles, evaded scores of journalists waiting at the main entrance of the MACC headquarters by using another entrance at the rear of the building.
"Najib has to answer the allegations".
Hamidi, Najib's former deputy, said: "I respect the rule of law".
The seizures took place in May, shortly after he lost re-election in a surprise upset against Mahathir Mohamad, who has pledged to hold him accountable for his misconduct.