https://www.foxnews.com/world/netanyahu-says-israel-has-killed-hamas-gaza-chief-mohammed-sinwar
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Sinwar is the younger brother of the group's former leader, Yahya Sinwar, who was killed in an Israeli strike in October. Mohammed Sinwar assumed leadership of Hamas in the Gaza Strip and its military wing, the Izz ad-Din al-Qassam Brigades, after his brother's death..
Sinwar's body was found in a tunnel in Khan Yunis, along with the bodies of ten of his aides, the outlet reported..."