An Israeli military statement said troops came under heavy fire during an operation in the city of Jenin, in which an armed operative of the Hamas group and two other people were arrested. It said troops returned fire and "hits were identified".
The Israeli military said Palestinians had started "a violent riot" near the town of Qarawet Bani Hassan on Saturday and soldiers who had been operating there opened fire.
The Israeli army said it had carried out a vast operation with police and intelligence officers targeting a site "used by the main operatives of the 'Lion's Den'", describing it as a "headquarters and a workshop for making weapons.”
Two brothers were killed by Israeli fire in Kafr Ein, near Ramallah, while a third man died of bullet wounds to the head fired by Israeli troops in Beit Ummar, near the flashpoint city of Hebron, the ministry said.
The General Assembly voted 87-26 with 53 abstentions on the resolution, with Western nations split but virtually unanimous support in the Islamic world and backing from Russia and China.
In a statement, the Ministry of Foreign Affairs affirmed the Kingdom's total rejection of the serious violations of international law by the Israeli occupation forces, and called on the international community to take responsibility to "end the occupation..."