Two mosques in the Israeli-occupied West Bank were set on fire overnight in an apparent Israeli settler attack, officials said overnight, after a spate of deadly violence that killed four Palestinians and two Israeli soldiers.Palestinians and the Israeli opposition accuse Prime Minister Benjamin Netanyahu's hard-line government of turning a blind eye to attacks by settlers against Palestinians, which threaten to ignite widespread violence across the territory.Israeli soldiers and police fanned out across the West Bank after the attack, closing off major roads and blocking access to a hospital Israel also arrested more than 70 Palestinians over the weekend.The mosques, in the villages of Qusra and Kour in the northern West Bank, suffered extensive damage in the fires.In Qusra, the attackers spray-painted "revenge Benayahu," referring to one of the settlers killed on Friday, and "the land of Israel is redeemed with blood"