Two California parents accused of holding their 13 children captive for years pleaded guilty on Friday to a multitude of charges.

CNN reported Saturday that Louise and David Turpin pleaded guilty on Friday to a series of crimes including torture, false imprisonment, adult abuse and child endangerment.

Their children, ranging from ages 2 to 29, were allegedly tied or shackled to beds or otherwise restrained from leaving the house for years at a time.

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David Turpin was also accused of sexual abuse by at least one of his daughters, according to The Washington Post. He pleaded not guilty to one count of lewd conduct with a minor.

In total, the two pleaded not guilty to more than 40 charges involving their children.

A sentencing hearing for some of the charges is set for April 19, according to NPR. Prosecutors have said they will not pursue a trial to avoid forcing the children to testify.

"We decided that the victims have endured enough torture and abuse," said Riverside County District Attorney Mike Hestrin, who called it "among the worst, most aggravated child abuse cases that I have ever seen."

"The defendants ruined lives. So I think it's just and fair that the sentence be equivalent to first-degree murder," Hestrin said Friday at a press conference, according to NPR.

In a recording of a 911 call obtained by CNN, one 17-year-old daughter of the Turpins described to police filthy living conditions that left her siblings unwell and malnourished.

"I can't breathe because of how dirty the house is," she said on the call, according to CNN. "We don't take baths. I don't know if we need to go to the doctor."

The Turpins were arrested after Friday's hearing, and face sentences of 25 years to life.