The Oscars paid tribute to Gene Hackman Sunday night, days after he and his wife Betsy Arakawa were found dead in their New Mexico home.

Gene Hackman and his wife Betsy Arakawa tested negative for carbon monoxide after they were found dead at their New Mexico home on Feb. 26, per police.

Actor Gene Hackman and his wife Betsy Arakawa were found dead in their New Mexico home. Here's what we know so far about their cause of death.