Police have established that US$972 million flowed into Najib Abdul Razak's bank account when he was the prime minister.

Police said this translated to RM2.973 billion. However, it is based on the exchange rate when the transactions took place from 2011 to 2013.

However, the US$972 million based on the current exchange rate (US$1 = RM4.10) would amount to a whopping RM3.985 billion.

Of this amount, US$681 million is public knowledge, which was the infamous "RM2.6 billion" based on the exchange rate when it was first exposed by the Wall Street Journal (WSJ) and Sarawak Report in July 2015.

That same amount is worth RM2.792 billion today.

According to the US Department of Justice, the US$681 million originated from Tanore Finance Corporation, whose source of funds was 1MDB's third bond raised in 2013 purportedly for a joint venture with Abu Dhabi Malaysia Investment Company (ADMIC).

Described as the "Tanore Phase", the transaction took place between March to April 2013.

The DOJ had explained how 1MDB's funds ended up in Tanore, and the details can also be found on Malaysiakini's microsite titled: "'Stolen' 1MDB Funds: The DOJ Lawsuit Revisited".

According to the DOJ, Tanore is beneficially owned by Eric Tan Kim Loong, believed to be an associate of businessperson Low Taek Jho, better known as Jho Low. Low is also believed to have used Tan's name as an alias.

Where the remaining sum came from

So where did the remaining US$291 million come from?

Details about the source had been revealed in bits and pieces over time and were extensively covered by various international media such as Sarawak Report, WSJ and Australia's ABC News.

Based on those reports and investigations by various jurisdictions, it can be established that of the remaining US$291 million, US$170 million came from Blackstone Asia Real Estate Partner Ltd and another US$120 million from one "Prince Faisal bin Turkey".

According to the DOJ, Blackstone's fund originated from 1MDB's US$3.5 billion double bonds which it raised with the help of Goldman Sachs in 2012, purportedly to acquire energy assets. US$1.367 billion of those funds were allegedly misappropriated.

The DOJ described this as the "Aabar-BVI phase" and details of how 1MDB's money ended up with Aabar Investments PJS (British Virgin Islands) and subsequently to Blackstone can be viewed here.

As for the US$120 million from Prince Faisal, Najib had repeatedly used this to claim that all the money he received was a "donation" from the Saudi Arabian royal family.

Prince Faisal, together with businessperson Tarek Obaid, were co-founders of PetroSaudi International. Tarek is also a key partner of Jho Low in the alleged laundering of 1MDB funds.

Described as "Saudi Associate 1 and 2" by the DOJ, 1MDB's funds ended up in their accounts after the company's US$1.03 million investment in a purported joint-venture with PetroSaudi International were diverted to Good Star Ltd, a company controlled by Low.

Good Star subsequently passed part of the money to Tarek and Prince Faisal.

Details of how 1MDB's funds ended up in Good Star and then subsequently disbursed to various players, known as the "Good Star phase", can be viewed here.

Interestingly, there are two transactions totalling US$80 million which did indeed come directly from the Saudi Arabian Finance Ministry.

The transactions took place between August and November 2011. The police appeared to have left out the US$80 million from its announcement today.

To date, there had not been any indication that the US$80 million came from illegitimate sources.