STORY: Islamist armed group Hamas, rival of the Western-backed Palestinian Authority (PA), said the PA had arrested one of its senior members wanted by Israel and another gunman, in the city of Nablus.
There was no immediate comment from the PA, which has come under criticism from Israel and the United States for not doing enough to rein in gunmen in militant strongholds such as Nablus and the nearby city of Jenin.
Confrontations broke out in both cities overnight. Gunshots were fired at the PA headquarters in Jenin, witnesses said. Shops shuttered and the An-Najah National University instructed students to stay home.
Witnesses said PA policemen fired tear gas against youths hurling stones. It was not immediately clear if the 53-year-old man killed in the clashes was hit by PA or militant fire.