Family of Sheikh Nimr al-Nimir Begin Three Days of MourningMourners began arriving Sunday at a mosque in eastern Saudi Arabia to join the family of executed Shiite cleric Sheikh Nimr al-Nimr in three days of cGet more newsLiveonPrintJan. 4, 2016, 10:48 AM UTC / Updated Jan. 4, 2016, 10:48 AM UTC