A former private banker went on trial in Singapore on Monday in the first prosecution of suspects linked to a massive international money-laundering scandal centred on Malaysian state fund 1MDB.
State prosecutors described the sums involved as "staggering".
They said Singaporean Yeo Jiawei, 33, an ex-wealth manager at Swiss bank BSI, was "one of the main Singapore-based suspects" in the scandal, which is also being investigated by Switzerland and the United States.
Allegations that billions of dollars were misappropriated from 1MDB have triggered a scandal in neighbouring Malaysia that has embroiled Prime Minister Najib Razak.
Both Najib, who founded the fund, and 1MDB have strongly denied any wrongdoing.