Widening demonstrations sparked by Iran's ailing economy spread Thursday into the Islamic Republic's rural provinces, with at least six people being killed in the first fatalities reported among security forces and protesters, authorities said. The deaths may mark the start of a heavier-handed response by Iran's theocracy to the demonstrations, which have slowed in the capital, Tehran, but expanded elsewhere. The fatalities, one on Wednesday and five on Thursday, occurred in three cities predominantly home to Iran's Lur ethnic group, the AP reports.