Authorities are currently investigating to determine the cause of the death of the legendary Hollywood actor Gene Hackman and his wife, Betsy Arakawa, who were found dead in their home in Santa Fe, New Mexico on Wednesday. Officials conducting the investigation call their deaths “suspicious.”

The bodies of the 95-year-old American actor and his 65-year-old wife were found in different rooms, according to the Santa Fe County Sheriff’s Office. One of their dogs was also found dead.

How did they die?

It remains unclear how Hackman and Arakava died, and authorities are investigating the circumstances. The sheriff’s office said Thursday afternoon that it has not determined the cause of death. Officials said there was no evidence of foul play and an autopsy found no external trauma to either man.

Toxicology and carbon monoxide tests were requested for both and the results are still pending, according to the sheriff’s office.

The City of Santa Fe Fire Department found no signs of a carbon monoxide leak or poisoning, according to the affidavit for the search warrant, and New Mexico Gas Co. found no evidence to suggest there was a problem with the pipes in and around the house.

“The circumstances surrounding the deaths of the two individuals are sufficiently suspicious in nature to require a thorough investigation and inquiry,” according to the affidavit.

When were they found?

Hackman and Arakawa were found Wednesday afternoon after someone called 911 to report the bodies. Sheriff Adan Mendoza said Thursday that the couple had been dead “for quite some time.”

A pest control officer was at the residence Wednesday and noticed the couple was not in the house, which was apparently unusual. The worker contacted a security officer, who went to the home and discovered the couple inside, Mendoza said.

A man who described himself as a janitor called 911 to report the bodies, according to the audio of the call. He said the door was locked and he couldn’t get in, but that he saw them through the window and that they weren’t moving.

Two maintenance workers said they found the couple’s front door ajar when they went to check the residence, according to the affidavit.

Santa Fe County police officers “observed no signs of forced entry into the residence,” according to the affidavit.

Where were they found?

Officers found the woman’s body on the floor of a bathroom, according to the affidavit. A heater was near her head and an open prescription bottle with pills “scattered”. It was not immediately clear what kind of pills they were.

Deputies suspected that “the heater could have been dropped in case the woman fell to the ground.”

They then found the dead dog, a German shepherd, about 50 feet away from Arakava in a bathroom closet.

As the deputies were cleaning the house, they found Hackman in a small room in the house, and the deputies believed he could have fallen suddenly, the affidavit said.

Both bodies showed “obvious signs of death.” Arakava’s body also showed signs of “body decomposition.”

Two other dogs were also found alive on the property. One was in the bathroom near Aracava and the other was outside the house.

What surprised investigators

Calling for a “thorough investigation and inquiry,” officials in the affidavit cited a number of things that struck investigators: the unlocked front door, the heater on the bathroom floor, the open bottle of scattered pills, the presence of two live dogs and a third that was dead, the fact that Hackman was in a separate room from Arakava and that there were no obvious signs of a gas leak.

After finding the couple, deputies searched the rest of the property and found nothing “out of place,” according to the affidavit. All other buildings on the property and the garage were locked and there was no evidence that the house had been “broken into or items removed from inside.”

Although there was no clear evidence of foul play, Mendoza said Thursday that investigators were not ruling anything out.