TJ Larson

The arrest of a Colorado man after police found dismembered remains in the back of the car he was driving, fueled speculation that the killer of Jessica Ridgeway may have been caught.

However, authorities have officially ruled out 24-year-old Ari Liggett as a suspect in the murder of 10-year-old Jessica Ridgeway of Westminster, Colo., according to Colorado Springs, station KKTV. Liggett is being held on first-degree murder charges in the death of his mother, 56-year-old Beverly Liggett. Police identified the dismembered remains allegedly found in back of the car he was driving as those of Liggett's mother.

Reports of Liggett's diminished mental state around the time of Jessica's disappearance along with the condition of his mother's remains led authorities to look for a link between Liggett and the abduction and murder of Jessica.

Jessica's body was found last week after she disappeared on her way to school on Oct. 5. Scores of investigators and several law enforcement agencies are in the process of checking all leads provided in the case. Last week, police released photos and a description of a small wooden cross they believe could belong to Jessica's killer. Investigators are hoping that someone will recognize the item.

Authorities are continuing to appeal to the public to provide leads in the case.

If you have any information, please contact 303-271-5612 or 303-658-4336. You can also contact the FBI or your local law enforcement agency.