Trial is underway for an Ohio National Guardsman accused of sexually abusing three adopted daughters and his stepdaughter.

Jury selection was completed Monday in Union County in the case of the 42-year-old Marysville man. He has pleaded not guilty, and his attorney has declined to comment.

The Associated Press isn't naming him to protect the children's identities.

The defendant is accused of abusing girls who were under 13. Prosecutors say he and his wife abruptly sent a fourth adopted daughter out of state and threatened other children in the family with a similar fate to keep them from talking.

The man's wife was charged with intimidation, obstructing justice and evidence tampering and pleaded not guilty. Her attorney hasn't commented.

A prosecutor said the children no longer lived with the guardsman.