The source said the committee is made up of representatives of the two Palestinian territories and the diaspora, namely Khalil al-Hayya for Gaza, Zaher Jabarin for the West Bank and Khaled Meshaal for Palestinians abroad.
It also includes the head of Hamas’s Shura advisory council Mohammed Darwish and the secretary of the political bureau, who is never identified for security reasons.
All current members of the committee are based in Qatar.
According to the source, the committee is tasked with “governing the movement during the war and exceptional circumstances, as well as its future plans”.
He added that it is authorised to “make strategic decisions”.
Another source from the group said that the Hamas leadership discussed a proposal that was made “internally” to appoint a political chief without announcing their name.
But, the source added, the leaders preferred to rule through the committee.
Sinwar was killed by Israeli troops in southern Gaza on Wednesday, more than a year into the devastating war in the territory sparked by Hamas’s October 7 attack.