The couples dog also lost its life, and authorities confirmed that no foul play took place.

Incredibly sad regardless of cause, one user wrote.

He also emphasized that foul play was not a factor in their passing.

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Image credits:Prime Video

As details emerged, social media platforms quickly filled with theories and condolences.

Image credits:Apple TV

According to a report byDr.

Even in non-fatal amounts, it can have long-lasting and sometimes irreversible effects on peoples health.

Gene Hackman and Betsy Arakawa in formal attire at an event.

The gas is especially dangerous for fetuses, affecting them at a 15% higher rate than the mother.

This is especially true for houses whose garagesare connectedto other rooms.

Vehicles should never be left running inside.

Gene Hackman smiling onstage, holding a trophy.

With enough warning, everyone can get out, one user wrote.

Its quite literally a silent killer, another replied.

like get carbon monoxide detectors installed in your home.

Gene Hackman in a movie scene wearing Western attire standing in front of Greeley’s, with onlookers and American flags.

Even the dog was found dead, too.

Something definitely poisoned them.

The family has not communicated any information regarding ceremonies or a service for the actor.

Gene Hackman in a movie scene wearing floral shirt and blazer stands by a car, harbor in background.

Massive gut punch.

Check out the results:

Gene Hackman in a movie scene sitting thoughtfully at a desk, wearing glasses and a watch.

Francis Ford Coppola and Gene Hackman engage in conversation on set, adjacent to a Panavision camera.

Gene Hackman wearing a suit during an interview.

Gene Hackman smiling in a tuxedo at a formal event surrounded by people.

Gene Hackman and Betsy Arakawa smiling together, both wearing black suits indoors.

Comment discusses theories on why Gene Hackman, wife, and pet were all found deceased.

Social media comment speculating on Gene Hackman, wife, and pet’s simultaneous death.

Text post about speculation, urging use of a carbon monoxide detector, relates to Gene Hackman and pet.

Comment discussing carbon monoxide alarms and safety measures.

Comment about Gene Hackman, wife, and dog all found deceased, described as creepy.

Comment discussing carbon monoxide detectors and their placement in homes.

Comment on Gene Hackman, wife, and dog found deceased, questioning a carbon monoxide leak.

Comment discussing theories about Gene Hackman, his wife, and their dog’s mysterious passing, mentioning carbon monoxide poisoning.

Comment discussing theories about Gene Hackman, wife, and pet’s mysterious deaths, questioning lack of foul play.

Text discussing theories about Gene Hackman, his wife, and their dog’s tragic end.

Comment expressing sorrow over a celebrity’s passing due to stomach cancer.

Social media post expressing sadness over Gene Hackman and family’s death.

Theories about Gene Hackman, wife, and dog d*ath; user speculates on causes and context.

Comment expressing condolences, mentioning Gene Hackman, actor, and family.

Comment mentioning suspicion about two people and a dog found deceased.

Katie Moss Hogue’s comment on suspicion regarding Gene Hackman, wife, and pet’s death.

Comment expressing suspicion over Gene Hackman, wife, and pet’s death.

Comment discussing possible carbon monoxide poisoning theory regarding Gene Hackman, wife, and pet.

Jennifer N Laws comments on theories about Gene Hackman, wife, and pet’s mysterious deaths, expressing condolences.