VINITA — A teenage boy who walked into the Vinita Police Department and confessed to shooting his stepmother said he had been sexually molested and “he was tired of the abuse,” according to an arrest affidavit.

Koalten Glenn Orr, 14, of Vinita, was charged as an adult with first- degree murder last week in Craig County District Court. He remains jailed on $250,000 bail in an area separate from adults, court records show.

Orr told police he shot Laura Hendrix, 38, on Aug. 22 because she was sexually abusing him, the affidavit states.

He called her his stepmother, but an obituary referred to her as the fiancee of his father, Kenneth Orr.