GRAND JUNCTION, Colo. - A Mesa County judge is being asked to rule in a dispute over the remains of two children who died after they were left alone in a running SUV.

The boys' grandmother, Diane Mathena, wants Tyler and William Jensen buried next to their father in Palisade, while the mother has indicated she wants them cremated. Mathena filed a petition in Mesa County court on Wednesday asking a judge to decide who has the right to determine what will be done.

The mother, Heather Jensen, has not responded to requests for comment.

Four-year-old Tyler and 2-year-old William were found unconscious after their mother left them alone in her running Toyota 4-runner, parked near the Powderhorn Ski Resort. Heather Jensen told police she had left her children for approximately 90 minutes while she was meeting a male friend, according to search warrant affidavit obtained by the Daily Sentinel.

William was pronounced dead at the scene. Tyler was pulled from life support on Tuesday and died at Children's Hospital in Aurora.

A doctor who treated Tyler told the newspaper that the toddler did not suffer from carbon monoxide poisoning, but authorities have released few details about their deaths.

Authorities say the investigation is continuing.

The boys' father died in a car accident in Rifle last month.