Ibn Sina Hospital spokesperson Tawfiq al-Shobaki said there was no exchange of fire after disguised Israeli troops entered the facility and killed three Palestinian fighters receiving treatment there, Al Jazeera reports.

“What happened is a precedent. There was never an assassination inside a hospital. There were arrests and assaults, but not an assassination,” al-Shobaki said.

Tuesday’s raid took place in the occupied West Bank town of Jenin, long a bastion of armed struggle against Israel and a frequent target of Israeli raids, even before the war began.

Israel has come under heavy criticism for its raids on hospitals in Gaza, which have treated tens of thousands of Palestinians wounded in the war and provided critical shelter for displaced people.