Former BSI Singapore banker Yeo Jiawei tried to hide his tracks by telling others to delete emails and make themselves unavailable for questioning by the authorities, a Singapore court yesterday heard.

The republic's second solicitor-general Kwek Mean Luck said this in seeking an additional two to three weeks remand for Yeo, who is held in investigations over former 1MDB subsidiary SRC International.

“It is believed that the accused is likely to have told others as well to suppress and tailor information,” The Edge Singapore reported Kwek saying.

“It can be fairly said, in relation to any concern over the length of remand, that the accused is the author of his present predicament,” he was quoted saying.

Kwek added Yeo played a key role in the case over the last three years, the financial daily reported.

Yeo is facing seven charges of money laundering and embezzlement related to SRC.

Yeo's lawyer Philip Fong, however, argued investigators would have already known the information they say they are seeking.

He said Yeo has been under probe since last year and has been under round-the-clock interrogation since he was arrested.

"There’s nothing else the accused can say, which has not been said already,” Fong is quoted saying.

“The accused appears to be serving his sentence already,” he added.

Yeo, 33, was a wealth manager with the Singapore branch of the Swiss bank BSI, which had earlier been fined by the United States Justice Department for assisting tax evasion by moving funds around in stealth for the super-rich.

BSI handled accounts for 1MDB, businessman Jho Low who played a key role in the state investment firm's founding, and Abu Dhabi's Aabar Investments PJSC, a firm 1MDB dealt with, documents submitted to the Singapore court show.