PALISADE, Colo.—Family members and friends have buried two boys who died after they were left alone in their mother's SUV.

Authorities say 4-year-old Tyler Jensen and 2-year-old William Jensen were found unconscious after their mother left them alone in her SUV last November. The coroner said they died from overheating.

According to KREX-TV (, they were buried Thursday next to their father at the Palisade Cemetery.

Their mother, Heather Jensen, was formally charged Thursday with fatal child abuse and criminally negligent homicide.

An arrest warrant affidavit alleges Jensen left the boys alone in the SUV while she was having sex and smoking marijuana.

The Grand Junction Daily Sentinel reported Thursday ( that the judge rejected a request by Jensen's lawyer to seal the court file and impose a gag order.