BUENOS AIRES — Argentine authorities are looking into possible criminal charges against Crown Prince Mohammed bin Salman of Saudi Arabia as he prepares to attend an international summit meeting of world leaders this week in Buenos Aires, officials involved in the inquiry said.

The inquiry, centering on allegations of war crimes during the Saudi-led military intervention in neighboring Yemen, is the most significant test yet of Prince Mohammed’s ability to move past the international uproar that has surrounded him since the killing of the Saudi dissident Jamal Khashoggi, a Virginia resident and Washington Post columnist.

The Khashoggi case, too, is expected to be part of the inquiry as well as allegations of torture in Saudi Arabia.

The investigation in Argentina, initiated by a complaint lodged by Human Rights Watch, the advocacy group, is in its early stages, and diplomatic or other kinds of immunity may ultimately shield the prince from any potential charges. Argentine officials called it extremely unlikely that the inquiry might produce an arrest warrant before the gathering, which is set to begin on Friday.