The US has so far returned or helped Malaysia recover more than $1 billion in funds and assets lost in the scam.
More than $4.5 billion originally meant to fund state investments was looted from 1MDB between 2009 and 2015, according to US investigators.
A young Malaysian businessman, Low Taek Jho, allegedly played a central role in the fraud and used much the money to buy luxurious homes and art and invest in Hollywood movies.
In October, he struck a settlement with US officials to forfeit assets worth $700 million including a Beverly Hills hotel and a private jet, as part of efforts to claw back stolen cash.
Malaysia’s ex-prime minister Najib Razak lost power at 2018 elections in large part due to his alleged involvement in the scandal, and is now on trial. He denies wrongdoing.
Low also maintains his innocence, and his current whereabouts are unknown.