BAGHDAD — A lone suicide bomber turned a tent full of Turkmen funeral mourners into a mass killing ground Wednesday, leaving at least 35 people dead, regional officials and tribal leaders said, calling it a genocidal attack meant to stoke sectarian tensions.

Both the dead and the 117 wounded victims included a number of high-ranking regional dignitaries and religious men among the Turkmen population in Salehedden Province, an area in the Kurdish north also claimed by Arabs and Turkmens. It came a day after an extended outbreak of sectarian shootings and bombings in the country.