Hamas said Sunday that Gaza cease-fire talks continue and the group’s military commander is in good health, a day after the Israeli military targeted Mohammed Deif with a massive airstrike.

Deif’s condition remained uncertain after Israel’s prime minister, Benjamin Netanyahu, said Saturday night “there still isn’t absolute certainty” he was killed. Hamas representatives gave no evidence to back up their assertion about the health of a chief architect of the October 7 attack that sparked the war.

The Israeli military on Sunday announced that Rafa Salama, a Hamas commander it described as one of Deif’s closest associates, had been killed in Saturday’s strike. Salama commanded Hamas’ Khan Younis brigade. The statement gave no update on Deif, who has long topped Israel’s most-wanted list and has been in hiding for years.

Hamas rejected the idea that mediated cease-fire discussions had been suspended after the strike. A spokesman, Jihad Taha, said “there is no doubt that the horrific massacres will impact any efforts in the negotiations” but added that “efforts and endeavors of the mediators remain ongoing.”

The killing of Deif would mark the highest profile assassination of any Hamas leader by Israel since the war began. It would be both a huge victory for Israel and a deep psychological blow for the terrorist group. Netanyahu said all of Hamas’ leaders are “marked for death” and asserted that killing them would move Hamas closer to accepting a cease-fire deal.

Hamas political officials insisted that communication channels remained functional between the leadership inside and outside Gaza after the strike in the territory’s south. Witnesses said it occurred in an area that Israel had designated as safe for hundreds of thousands of displaced Palestinians. Israel’s military would not confirm that.

On Sunday, some survivors were angry that the attack targeting Deif occurred without warning in an area they had been told was safe.

“Where are we supposed to go?” asked Mahmoud Abu Yaseen, who said he heard two strikes and clutched his children, then woke up in the hospital to find his son had died. The family had already been displaced five times since the war began, he said.

Also on Sunday, police said a Palestinian resident of east Jerusalem carried out a car-ramming attack in central Israel that injured four Israelis, two of them seriously. Israeli border police at the scene shot dead the attacker after he hit people waiting at two bus stops along a busy road. Israel Commissioner Kobi Shabtai said the attacks are often “triggered” by events like Saturday’s airstrike at Gaza.