An Israeli strike on a Gaza hospital that reportedly killed 20 people, including four journalists, was a “tragic mishap,” Israeli Prime Minister Benjamin Netanyahu said on Monday, not long after President Donald Trump criticized the attack. 

“Israel deeply regrets the tragic mishap that occurred today at the Nasser Hospital in Gaza. Israel values the work of journalists, medical staff and all civilians,” the Prime Minister’s Office said in a statement. “The military authorities are conducting a thorough investigation. Our war is with Hamas terrorists. Our just goals are defeating Hamas and bringing our hostages home.”

Trump told reporters in the Oval Office that he is “not happy” about Israel’s strike on the Nasser Hospital, in the southern Gaza Strip.

“I’m not happy about it. I don’t want to see it,” Trump said, while noting that he did not know the details of the strike.

The president added that he is also committed to getting the remaining hostages out of Gaza, though he expressed doubt that a deal would come through.

“At the same time,” he said, “we have to end that whole nightmare. I’m the one that got the hostages out. I got them out, all of them. [Middle East envoy] Steve Witkoff has been amazing.”

Israel has said that 20 living hostages are still being held in Gaza, but Trump on Monday repeated a claim that the true number is “probably a little bit less than 20, because I think one or two are gone.” Israeli officials have not said that any of the 20 hostages believed to be alive have died recently. 

Hamas, Trump said, is unlikely to release the hostages. 

“I said a long time ago I’m going to get them out, but when we get down to that final 10 or 20, these people aren’t going to release them, because [Hamas is] dead after they release them,” Trump said. “It’s a nasty situation, very nasty. Horrible thing.” 

The Israeli Defense Forces announced that it would conduct an inquiry into the attack. “The IDF regrets any harm to uninvolved individuals and does not target journalists as such. The IDF acts to mitigate harm to uninvolved individuals as much as possible while maintaining the safety of IDF troops,” IDF international spokesperson Lt. Col. Nadav Shoshani said.