GRANBURY, Texas (AP) -

Authorities believe skeletal remains found inside a truck recovered from a North Texas lake are those of a woman missing for 35 years.

A statement released by the Hood County Sheriff's Office says a passer-by discovered the partially exposed 1970s-model Chevy truck Thursday in Lake Granbury. The ongoing drought has dropped the lake's water level, revealing a portion of the vehicle.

While inspecting the truck's cab, investigators found the skeletal remains and a purse containing objects with Helen Holladay's name on them.  Holladay was 45 years old when she disappeared in September 1979.

Her husband, Herman, was a suspect in her disappearance but was never charged and has since died.

Authorities have notified Holladay's two surviving daughters and the results of DNA tests could be returned in about two months.