A retired judge and former state senator was found dead in his southwest Denver home with his wife on Monday afternoon.

Family members told 9NEWS Roger Cisneros, 93, and his wife Adelia, 89, were discovered by their granddaughter just before 3 p.m. in the home on the 4700 block of W. Yale.

Denver Police said their deaths were not criminal in nature, but a possible result of carbon monoxide poisoning. A family member said it appears a car was left running in the garage.

CHICAGO, IL - OCTOBER 20: Sixty members of Chicago's literary community including Roger Ebert, Scott Turow, Stuart Dybek, Sara Paretsky, David Axelrod, Sandra Cisneros, Dennis DeYoung, Jim Karas, Jim Lovell, Leon Lederman and more pose.

Roger practiced law for several years and in 1964, he was elected to the Colorado State Senate serving for 12 years.

In 1978, Governor Richard Lamm appointed him to the State of Colorado District Court where he served in the domestic, civil and criminal divisions.

Judge Cisneros retired in 1986 and served three more years as a senior judge.

Cisneros also served on The Colorado Olympic Commission for the 1976 Winter Olympics and the boards of the Denver YMCA, the Denver Art Museum, Girls Club Inc., the West Side Action Council, and The Southwest Youth Service Board, according to the Colorado Bar Association.

His daughter told 9NEWS her father sacrificed a lot for the Latin American community and she hopes his legacy lives on.

Denver Mayor Michael Hancock released the following statement on the former judge's passing:

“It’s heartbreaking to learn of the tragic passing of Judge Roger Cisneros and his wife Adelia. Judge Cisneros spent his career serving and working on behalf of the people of Denver and Colorado. He was a trailblazer who represented our city honorably in the State Senate, as a respected jurist on the Colorado Bench, and as a member of numerous community organizations. Judge Cisneros was a thoughtful and passionate voice for justice and empowerment for those who sought it, especially among Denver’s Latino community. Judge Cisneros and Adelia will be greatly missed, and they and their family are in the thoughts and prayers of everyone in our city.”