This was the first meeting between MBS and a representative of the incoming Trump administration since the November elections.
The Israeli investigator had previously exposed an international terror financing network.
The study examined hundreds of opinion articles and columns published in the Saudi English-language press over the past year.
Saudi Arabia's crown prince condemned Israel's "genocide" in Gaza at a Riyadh summit, stressing support for Palestine and pausing US-led normalization talks after recent violent escalations.
The meeting comes while the region prepares for incoming US President Donald Trump to take office.
Historically, Saudi Arabia and Egypt were the two pillars of stability for the region, and both are friends of the United States.
Saudi Crown Prince MBS demands US and Israeli commitments on a Palestinian state, citing security fears as he negotiates a historic deal.
MBS referenced this threat to explain why the Israel-Saudi deal must include an immediate pathway to Palestinian statehood.
In Cairo, Bahrain and Egypt discussed the desire for calm in Gaza and putting an end to “ongoing regional tension.” The two sides agreed on the urgent need to exert efforts towards de-escalations.
Israel and Saudi Arabia seemed on track towards a historic normalization deal, and while the Gaza war has altered the path, how does Iran's newest attack change it all?