CODY, Wyo. (AP) — Authorities have not yet released the name of an elderly Cody man who died in a house fire this weekend.

Officials on Wednesday said they believed the victim was the 74-year-old man who lived in the home, but the identity could not be confirmed until a coroner's autopsy.

Firefighter's found the man's body on the second floor of a Cody home on Sunday.

Cody Fire Department Marshal Sam Wilde says the fire started on the second story and burned unnoticed for many hours because of the home's sturdy log construction. It wasn't until interior oxygen was consumed that flames broke through the roof.

The cause of the fire remains unknown.