Indonesia handed over to Malaysia on Monday a $250 million luxury yacht, impounded earlier this year as part of an worldwide hunt for assets purchased with billions of dollars allegedly siphoned off from state fund 1Malaysia Development Bhd.
Malaysia's Prime Minister Mahathir Mohamad thanked Indonesian President Joko Widodo, in a video posted on his Facebook page, for facilitating the yacht's handover.
"The ultimate owner of this yacht is believed to be a Malaysian citizen known as Low Taek Jho, who is now a fugitive and believed to be the mastermind of this plan to steal billions of dollars from 1MDB", said Al Jazeera's Florence Looi, reporting from Malaysian capital Kuala Lumpur.
The former prime minister turned up at the Malaysian Anti-Corruption Commission Academy in a four-car motorcade at about 5pm on Tuesday, where he was said to have received three notices on the new charges against him.
Last month, Najib was arrested and charged with abuse of power and criminal breach of trust related to an alleged transfer of 42 million ringgit (£7.9 million) into his personal bank account from SRC International, a former unit of state fund 1MDB.
Malaysian and worldwide authorities want to question Malaysian financier Jho Low, who the Justice Department alleges was a key figure in the theft and global laundering of US$4.5 billion from 1MDB.
Former defence minister Hishammuddin Hussein said the government's decision to close the Saudi-backed King Salman Centre for International Peace (KSCIP) was a loss to Malaysia. His Malaysian passport has been revoked and an arrest warrant issued. Indonesia then agreed it would hand over the yacht to Malaysia.
The DoJ has sought to take custody of the Equanimity, after it was seized by Indonesia in February at the request of US authorities as part of a multi-billion dollar anti-kleptocracy investigation into 1MDB.
Lawyers representing the wanted financier, also known as Jho Low, filed a notice yesterday to a California district court to direct the USA government to reveal its knowledge of the yacht's transfer.
"If there is any party who wants to claim that this vessel belongs to them, they can show proof of ownership".
Low, who has so far evaded arrest, issued a statement through his USA attorney on Monday protesting the handover of the yacht as an "illegal act" for ignoring court proceedings in the United States. We want to know where they can get so much money to buy such an expensive yacht.