Gene Hackman and wife's death investigation continues as cause of death remains a mystery

Authorities in New Mexico are expected to provide an update Friday on the investigation into the death of actor Gene Hackman and his wife Betsy Arakawa. Investigators have said they haven't yet determined a cause of death for the couple, who were found dead in their home on the outskirts of Santa Fe.

The couple were discovered Wednesday afternoon by a caretaker, according to the Santa Fe County Sheriff's Office. One of their dogs was also found dead.

The sheriff's office has said there were no apparent signs of foul play, but Santa Fe County Sheriff Adan Mendoza told reporters Thursday that he wasn't ruling it out.