It was the third major incursion by the Israeli army in less than two years into Jenin, a longtime major stronghold of militant groups including Hamas and Islamic Jihad, which said its forces were fighting Israeli troops.
Israel has launched a 'large-scale' operation in the West Bank.
Israel captured the West Bank, Gaza and east Jerusalem in the 1967 Mideast war, and Palestinians want all three territories for their future state.
While the first stage of a ceasefire unfolds in Gaza, the Israeli military carries out a destructive and deadly operation across the occupied West Bank’s Jenin.