First, the jihadists sent a letter saying they were coming to the village to preach, said Nigerian chief Umar Bio Salihu. When no one attended, they went on a rampage, killing people and torching houses, he said. Salihu is the traditional chief of Woro, a small, Muslim-majority village in west-central Nigeria where alleged jihadist gunmen are reported to have perpetrated a massacre late Tuesday. Details were still emerging from the attack, but it was one of the country’s deadliest in recent...