Three days after a Cupertino couple were found dead inside their ranch-style home, authorities said Tuesday that their deaths would be considered a murder-suicide or joint suicide.

Gary Longdon, 50, died Saturday from “”an apparent gunshot wound”” to the head, according to the Santa Clara County Sheriff’s Office, which officially confirmed their identities Tuesday.

Although the medical examiner’s office determined that 51-year-old Susan Longdon suffered blunt force trauma to her head, further testing must be done before a cause of death can be determined, sheriff’s Sgt. Jose Cardoza said.

A final ruling on their deaths must still be made.

Saturday’s deaths have stunned the neighborhood, with questions swirling about what led to such a tragedy.

Court records, though, offer possible clues.

Documents show that Susan Longdon had filed for divorce from her husband three months ago. The couple married on Dec. 31, 1981, and had been separated since September, according to court documents.

On Saturday about 2:30 p.m., sheriff’s deputies discovered the bodies after responding to a report of a “”suspicious circumstance”” at a home in the 10300 block of Westacres Drive.

Susan Longdon worked as a senior mortgage lender for Silicon Valley Bank. Company spokeswoman Carrie Merritt said Longdon was a “”very well-respected and well-liked member”” of her team who was always there for her clients.

Merritt said Susan Longdon would

always have a bottle of wine to help her clients celebrate after signing loan documents.