Actor Gene Hackman, his wife Betsy Arakawa, and their dog were found dead in their Santa Fe home, in a scene that one detective had deemed “suspicious enough in nature to require a thorough search and investigation.

Authorities are currently awaiting carbon monoxide and toxicology testing results to determine a cause of death for Hackman and Arakawa.

No cause of death has been determined so far for Gene Hackman and Betsy Arakawa, but New Mexico police say the situation “remains an open investigation.” With affidavits, search warrants and statements calling the death of the two-time Oscar winner,