In 1989, he was arrested by Israeli authorities and sentenced to four life terms for several counts of murder. During his time in prison, he gained reputation as a key leader among jailed Hamas members.
In 2011, following more than two decades in prison, he was released as part of a prisoner exchange deal between Israel and Hamas. After his release, he rose through the ranks of Hamas, and in 2017 became the leader of the group’s political branch in Gaza.
Sinwar is seen as a hardliner within Hamas and is known for his militant approach to Israel.
Regarding rumors of his death, it’s important to note that such claims often arise in times of conflict and should be treated with caution until they can be independently verified. As of the latest updates available to me, his death has not been officially confirmed.