Israel said on Wednesday it had killed the new head of Hamas's armed wing in Gaza, Mohammed Odeh, after killing his predecessor earlier this month despite an ongoing ceasefire.
In a joint statement, the Israeli military and the Shin Bet domestic security agency confirmed the killing of Odeh on Tuesday, saying he had been appointed head of the Ezzedine Al-Qassam Brigades after the May 15 killing of Ezzedine al-Haddad.
The group never officially announced or confirmed Odeh as head of the brigades.
He had long been the head of its intelligence service.
"We committed ourselves to eliminating everyone who led the October 7 massacre, and that is what we will do: they are all marked for death, wherever they may be," Katz said in his post on X.
He also repeated Israel's goal of ending Hamas's rule over the Palestinian territory and alluded to a plan for the forced displacement of its residents.
"The plan for voluntary migration from Gaza will also be implemented — everything will be done at the right time and in the right way," he said.
The displacement of Gazans is a project backed by far-right Finance Minister Bezalel Smotrich. US President Donald Trump previously expressed support for the idea before ditching it.
In February, the UN High Commissioner for Human Rights, Volker Turk, denounced plans "aimed at making a permanent demographic change in Gaza".
In the aftermath of Hamas's storming of Israel, Israeli Prime Minister Benjamin Netanyahu pledged to target and eliminate the leaders behind it.
The attack resulted in the deaths of 1,221 people, according to an AFP tally based on official Israeli figures.
Israel's retaliatory response in Gaza has killed at least 72,803 people, according to the territory's health ministry, which operates under Hamas authority.
Israeli strikes have also targeted Hamas operatives in Lebanon and senior Iran-backed Hezbollah commanders allied with the group, including former Hezbollah chief Hassan Nasrallah.