After a night of heavy airstrikes, the Israeli military announced Tuesday that its expanded operation in Gaza City “to destroy Hamas ’ military infrastructure” has begun and warned residents to move south.

Israel’s Arabic language spokesperson Avichay Adree announced the expansion of Israel’s operation on X, after a night of heavy strikes against northern Gaza that killed at least 20 people.

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"The IDF has begun dismantling Hamas terrorist infrastructure in Gaza City," Adraee said in a post on X this morning. “Gaza City is a dangerous combat zone.”

The Israeli military and government did not immediately respond to requests for more information from NBC News.

Israel has been warning the famine-stricken Gaza City

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