Authorities have arrested an 80-year-old man accused of imprisoning his two mentally challenged daughters and sexually abusing them for 41 years.

The shocking arrest was made in the village of St. Peteram Hart in Austria after the daughters escaped after one allegedly knocked over her father when he tried to rape her.

The women are described as having "mental deficiencies," and the man denies abusing the women, now 53 and 45, beginning allegedly when they were 12 and 4.