A Kalona man turned himself in to authorities yesterday on a Washington County warrant for sexual abuse charges. At 9 a.m., 21-year-old Steven Maurice Harper turned himself in at the Washington County Jail. His offenses include three counts of sexual abuse in the third degree, three counts of enticing a minor under 16 for sexual purpose, and dissemination and exhibition of obscene materials to minors. He is being held on $46,000 bond.