A Palestinian infiltrator killed five Israelis in a Jewish settlement in the West Bank early Saturday, an Israeli military spokeswoman said.
Israeli media said the attacker broke into a house in the settlement of Itamar overnight and stabbed to death a couple and three children, including a baby, from the same family.
"Five civilians were killed in this terrorist attack," the spokeswoman said.
She said troops were searching for the attacker in the area around Itamar, which is near the Palestinian city of Nablus. She gave no further details.