Investigators have found no external trauma on either of the bodies of Hackman and Betsy Arakawa, who died tragically inside their $3.8 million home in Sante Fe, New Mexico, amid much speculation about how they passed away.

Authorities are still awaiting the complete results and a toxicology report, even though the autopsies were finished early on Thursday morning.

Leslie Anne Hackman, one of Gene’s three children, previously told DailyMail.com that she and her sister Elizabeth Jean thought they might have died from breathing in poisonous fumes from a carbon monoxide leak.

However, after the couple’s bodies were discovered, Santa Fe City Fire Department and the New Mexico Gas Company tested the couple’s house for carbon monoxide and other foreign substances and determined that it was safe.

According to an affidavit, “New Mexico Gas Company responded to the residence and was testing the gas line in and around the residence.”

“At this time, there are no indications or proof that the pipes in and around the house have ever had any issues.”

“Initial findings noted no external trauma to either individual,” Sheriff Adan Mendoza said in a statement Thursday afternoon.