LEBANON, Ore. (KOIN) — A 78-year-old Lebanon man is behind bars after allegedly admitting sexually abusing a developmentally-delayed 28-year-old woman he’s known since she was an infant.

Richard Wade Conklin went on his own to the Linn County Sheriff’s Office and told them about the alleged sexual activity, the sheriff’s office said in a release.

Conklin and the woman’s family are friends who went to the same church, officials said. He allegedly said the sexual activity began several years ago and said he was wrong to do it.

He’s charged with 3 counts of 1st-degree sexual abuse, 1st-degree sodomy and 1st-degree unlawful sexual penetration.

The investigation is ongoing.