COLORADO -- A man considered a person of interest in the Delphi murders of Abigail Williams and Liberty German is on his way back to Indiana to answer to unrelated felony charges.

Daniel Nations waived his extradition rights in Colorado on Wednesday after a felony warrant for failing to register as a sexual violent offender was issued from Johnson County, Indiana. Those charges are not related to the Delphi investigation.

The sheriff’s office in Clear Creek County says Nations will be returned to Indiana in the next 21 days to answer to those charges.

Nations was in court Wednesday in Colorado on unrelated charges about providing false information to law enforcement. He was going to be released on his own recognizance, but then the Colorado sheriff's office found a warrant from Johnson County.

Nations was arrested in September 2017 following reports that he was threatening hikers with a hatchet on a Colorado trail.

READ | Delphi 'person of interest' Daniel Nations faces new charges in Colorado

Investigators in Colorado contacted Indiana State Police after receiving multiple tips comparing Nations' mugshot to the sketch of the Delphi killer.

MORE | Who is Daniel Nations? The latest 'person of interest' in the murders of Libby & Abby | ISP investigating possible connection between Colorado arrest and Delphi murders | ISP returns from Colorado, says Nations 'neither included nor excluded' as suspect

Besides possible similarities in his appearance to the police sketch of the Delphi killer, a number of other coincidences drew investigators toward Nations. He is a registered sex offender, was driving with expired Indiana plates when he was arrested in Colorado and he was living in Indiana at the time Libby and Abby were murdered.

TIMELINE | Could Daniel Nations be connected to the Delphi murders?

Nations was named a "person of interest" in the case but was never officially charged in connection with the crimes. Indiana State Police said in October 2017 that Nations was 'neither included nor excluded' as a suspect.

READ | Daniel Nations' wife is 'scared' of him but doubts he was involved with Delphi homicides | Former boss recalls Daniel Nations' temper: 'He went after my husband with a hatchet'

The search for the Delphi killer continues.

Please continue to share the below video and audio recording, to help investigators find the person who killed Abby and Libby.

Indiana State Police ask anyone who recognizes the man or the voice, or who may have any other information, to call the Tip Line at (844) 459-5786 or 1-800-225-5324 (800-Call FBI). Tips can also be emailed to Abbyandlibbytip@cacoshrf.com. Information can be reported anonymously.

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