Falcon could not immediately be reached for comment and the Monetary Authority of Singapore declined to comment on the matter.

Last month, MAS revealed Singaporean authorities had found “control failings” and other shortcomings at Falcon, DBS, Standard Chartered and UBS in their investigations into possible laundering of money connected to 1MDB, the Malaysian state-run fund. MAS said authorities had seized S$240 million of assets.

Falcon has previously said it is co-operating with Singaporean authorities.

Last week, the Financial Times reported that Swiss authorities are probing Khadem al-Qubaisi, the former head of Abu Dhabi's International Petroleum Investment Company, over an alleged plot to misappropriate more than $1 billion of 1MDB funds. IPIC owns Falcon Private Bank.

Politicians and other figures are accused of diverting millions of dollars intended for 1MDB, which was launched in 2009 with the stated aim of boosting the Malaysian economy, for personal use. Authorities in the US, Switzerland, Luxembourg and Singapore have been investigating the allegations.