A convicted sex offender has been sentenced to 70 years in prison for sexually assaulting three children in the home they all lived in, according to a news release from the 18th Judicial District Attorney’s Office.

John Cornell, 41, pleaded guilty to four counts of sex assault on a child by a person in a position of trust. Per a plea agreement that also spared the victims from testifying, the other 69 counts in the case were dropped, the DA’s office said.

Cornell has a lengthy criminal record that includes a prior case where he was required to register as a sex offender. He was released from prison in 2016 after serving time for an attempted escape conviction. Despite this, his parole officer approved him living in a Highlands Ranch home with Amanda Perea, a woman he used to be romantically involved with.

It was in this home that he assaulted the three victims, according to prosecutors.

One of the children even told the Perea about what was occurring, according to the DA’s office, but she allowed Cornell to keep living in the home, have access to the kids and helped him destroy pornographic images taken of the victims.

The father of one victim told the judge Cornell “is a child molester who has damaged my daughter for the rest of her life …

“The system allowed him to be free and offend again …. True and fair justice for the victims is to know their worst nightmare will remain where he belongs, in prison.”

Perea no longer has custody of the children and pleaded guilty to tampering with evidence in June. She was sentenced to 30 days in jail, 50 hours of community service and two years probation.