Last week, a startling claim came to light when a Singapore court was told that businessman Jho Low had used companies under the alias Eric Tan Kim Loong for the purpose of setting up four accounts at Falcon Private Bank.

The four Falcon accounts were under Westfield Group Services Inc, Granton Property Holding Limited, Tanore Finance Corp and Midhurst Trading Limited, all of which were beneficially owned by Tan.

Following this, Sarawak Report, quoting sources, claimed that a signatory to the Falcon accounts in Singapore, was a woman.

The website alluded that the woman was Prime Minister Najib Abdul Razak's wife Rosmah Mansor, prompting the latter's lawyer to issue a denial.

A statement by the Singapore Attorney-General's Chambers on Jan 10 appeared to indicate that it could have been another individual, who was also implicated in the US Department of Justice (DOJ) suits as well.

The statement on the trial of former Falcon Private Bank Singapore branch manager Jens Fred Sturzenegger highlighted a conversation he had with Low on appointing former 1MDB executive Jasmine Loo as a signatory for accounts the latter had opened under the alias Eric Tan.

"On March 19, 2013, the accused (Sturzengger) had a telephone conversation with Jho Low.

"Part of the conversation touched briefly on the subject of adding Jasmine Loo as a signatory over the Falcon Accounts," the Singapore AGC said in a statement published by The Edge.

The Singapore AGC did not state if the move to make Loo a signatory went through.

However, the DOJ in its 1MDB-linked civil forfeiture suits, noted that a "1MDB Officer 3" was an authorised signatory of the Tanore account at Falcon Private Bank.

The Tanore account was the origin of US$681 million deposited into Najib's personal bank accounts, which the prime minister claimed was a donation from a member of the Saudi Arabia royal family.

The DOJ claimed US$835 million was diverted from a US$3 billion bond intended for the development of 1MDB's Tun Razak Exchange into the Tanore account, after passing through overseas investment funds.

"On or about March 20, 2013, one day before (1MDB) funds were first credited to the Tanore Account from the overseas investment funds, '1MDB Officer 3' was given signing authority on the Tanore Account through the execution of a Power of Attorney form signed by '1MDB Officer 3'.

"A copy of the Malaysian passport belonging to '1MDB Officer 3' was included in that documentation," stated the DOJ.

While the DOJ did not name “1MDB Officer 3”, it appeared to be referring to Loo based on the description that the officer was 1MDB's former general counsel and executive director of group strategy, positions which Loo held during her tenure at the firm.

Loo, a law graduate, appears to have played a key role in the 1MDB saga.

She was described by the DOJ as the main contact person between 1MDB and Goldman Sachs, when the latter underwrote three bond offerings for the former in 2012 and 2013.

The US$3 billion for the Tun Razak Exchange was the third bond, which saw a total of US$1.26 billion being allegedly diverted - US$835 million to Tanore and US$430 million to Granton, both of which held accounts at Falcon Private Bank.

It is not known if Loo was also an authorised signatory for the Granton account.

"Shortly after proceeds of the 2013 bond sale were diverted to the Tanore Account, US$681 million was sent from the Tanore Account to a bank account belonging to 'Malaysian Official One' (MO1).

"'1MDB Officer 3' was added as an authorised signatory on the Tanore Account roughly one day before the first wire of US$620,000,000 was sent from the Tanore Account to the account of 'MO1'," said the DOJ.

The US$620 million transfer on March 21 was followed by a second payment on March 25 worth US$61 million to "MO1's" accounts.

Minister in the Prime Minister's Department Abdul Rahman Dahlan had confirmed "MO1" was Najib.

Abdul Rahman had argued that since the DOJ documents did not name Najib, he was not being investigated. The prime minister has also denied abusing public funds for personal gain.

Meanwhile, Loo is accused of having benefited from funds diverted from the first two 1MDB bond offerings underwritten by Goldman Sachs.

US$1.367 billion from the two earlier bond offerings were diverted in 2012.

Of these, about US$5 million ended up in a bank account in Zurich, Switzerland, on Dec 6, 2012, which was held under the name of “River Dee International SA”.

The DOJ claimed that Loo was the beneficiary of that account.

Loo had left 1MDB at an undisclosed date. The Wall Street Journal, citing sources, said that a year after her departure, she had transferred "hundreds of thousands" to Tim Leissner, the former Goldman Sachs banker who was in charge of its South East Asia operations during the 1MDB saga.

The transfer to Leissner was allegedly for a startup company the two were backing, although it is not clear what the company is.

Loo's current whereabouts are unknown. Bank Negara had made a public appeal for her whereabouts in July last year to assist with investigations.