VANDALIA, Ind. (AP) — Authorities say an elderly woman is dead after a house fire in north central Indiana.

The South Bend Tribune reports that 87-year-old Phyllis Jean Tucker of Vandalia was pronounced dead at the scene around 10 p.m. on Saturday.

The Cass County Sheriff's Office says when deputies and firefighters arrived they found the house fully engulfed. Authorities say two occupants escaped unharmed and three of the family's four dogs escaped.

Sergeant Jeff Smith said Sunday that the cause of the fire remains under investigation.