LIVE: Gene Hackman death investigation | FOX 4 News

Questions continue to swirl as investigators probe the deaths of actor Gene Hackman, his wife, Betsy Arakawa, and one of their dogs.

Hackman, 95, was a prolific actor who performed as an array of heroes and villains in films including "The French Connection," "Hoosiers" and "Superman" from the 1960s until his retirement in the early 2000s.

Arakawa, 63, was a purposely private person and classical pianist who first met Hackman while she was working part-time at a fitness center in the mid-’80s, according to The New York Times.

In a search warrant affidavit obtained by Fox News Digital, officials revealed that Arakawa's body was found decomposed with bloating on her face and mummification in her hands and feet. Hackman was also found to have the same signs of decomposition as his wife.

When two Santa Fe County patrol deputies arrived at the scene, they walked to the front of the residence and found the front door ajar. They did not observe any signs of forced entry into the home, according to the warrant.

Hackman's body was discovered in the home's entryway and Arakawa was found dead next to a space heater in a bathroom. On a countertop near Arakawa, pills were scattered next to an open prescription bottle, according to the search warrant.

Police said they found the body of a German shepherd in the bathroom closet. Two other dogs were found alive on the property.

No foul play was suspected, authorities said, though a search warrant showed investigators thought the deaths were "suspicious enough in nature to require a thorough search and investigation."

Their cause of death is still unclear.

Former NYPD cold case investigator Joseph Giacalone questioned the color of the skin on the decomposed bodies, which wasn't noted in the search warrant affidavit.

Was the house really hot? Did they have a lot of clothes on? The heat can get the bodies into those stages faster," Giacolone said.  "You have different stages that you look for, like the liver mortis, which is the purple-ing of the body, and what we call the dependent areas you could tell by how long somebody has been dead. This is all approximate stuff."

He added, "How long have the bodies been there? You can generally determine this based on the stiffness that you see. So, from an investigator's standpoint, there are clues. This is something, ultimately, the medical examiner or medical legal investigator will weigh in on. But detectives generally have a good idea about what they're looking at."