Lancaster County deputies found a 14-year-old runaway girl in Lincoln on Monday, and she reported that she left her Waverly home because her dad sexually assaulted her.
Sheriff Terry Wagner says the 39-year-old father has been arrested on suspicion of sexual assault, incest and generating child pornography.
The girl's mother has been arrested on suspicion of child neglect. Wagner says investigators think she knew about the abuse but didn't stop it.
The girl and two boys who lived in the home have been put in the care of state authorities.
WOWT not using the names of those involved, to protect the privacy of the girl.