Jaacob VanWinkle, 31, is facing multiple charges of first-degree murder, kidnapping and sex assault after police found three bodies inside a Cañon City home.
Police say Vanwinkle is responsible for the deaths of 35-year old Mandy Folsom and her two young children, Marissa and Mason.
Folsom's teenage daughter escaped from the house and was able to call 911.
Police were originally responding to reports of a sexual assault when they found the bodies.
VanWinkle is a convicted child molester from a 2004 case.
11 News obtained the arrest papers from that case, which included statements from four girls under the age of 7.
According to the affidavit, VanWinkle exposed himself to the girls and molested them.
Police say during that investigation they went to the home he lived in with a family member. Allegedly, the family member told them she "was afraid something like this was going to happen" and that "Jaacob has had prior problem with exposing and fondling himself."
VanWinkle was sentenced to four and a half years in an Indiana prison for child molestation and vicarious sexual gratification, before his probation sentence began.
In 2006 he was released to probation more than two years early.
11 News asked Indiana Department of Correction officials why VanWinkle was let out early; they told us due to an Indiana statute inmates with good behavior can earn one day's credit for every day served.
VanWinkle was arrested again in 2010 after being convicted of theft/receiving stolen property.
That time he was also released from prison early due to the good behavior statute.
After returning to prison after violating parole from that case, he was eventually discharged from parole supervision in 2012.
The Fremont County Sheriff's Office tells 11 News they were in the process of issuing an arrest warrant for VanWinkle in Cañon City for failure to re-register as a sex offender on March 4, 2014.
VanWinkle will be back in court on Wednesday. 11 News will have the latest details.