During Israeli military operations in the camp, Palestinian sources alleged that a massacre of hundreds of people had taken place. A senior Palestinian Authority official alleged in mid-April that some 500 had been killed. During the fighting in Jenin, Israeli officials had also initially estimated hundreds of Palestinian deaths, but later said they expected the Palestinian toll to reach "45 to 55." In the ensuing controversy, Israel blocked the United Nations from conducting the first-hand inquiry unanimously sought by the Security Council, but the UN nonetheless felt able to dismiss claims of a massacre in its report, which said there had been approximately 52 deaths, criticising both sides for placing Palestinian civilians at risk. Based on their own investigations, Amnesty International and Human Rights Watch charged that some IDF personnel in Jenin had committed war crimes but also confirmed that no massacre had been committed by the IDF. Both human rights organizations called for official inquiries; the IDF disputed the charges.