An Iowa woman claimed that her now-deceased father killed between 50 and 70 women over a three-decade span, prompting a police investigation, Newsweek reported Saturday.

“My father was a lifelong criminal and murderer,” Lucy Studey told the outlet, continuing an accusation against her father, Donald Dean Studey, that she says she’s been making for 45 years.

Lucy Studey said most of her father’s victims were dark-haired white women in their 20s or 30s — with the exception of a victim who was a 15-year-old runaway. She added that the majority of the women were either sex workers or visitors that he came across in Omaha, Nebraska.

Lucy Studey said he killed the victims by shooting them, stabbing them, or smashing their heads in.

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“No one would listen to me,” she told Newsweek, saying she went to her teacher and local authorities regarding her father’s alleged crimes. “The teacher said family matters should be handled as a family, and law enforcement has said they couldn’t trust the memory of a child. I was just a kid then, but I remember it all.”

Read more: Insider