Authorities investigating the deaths of Gene Hackman and his wife Betsy Arakawa believe Hackman likely died nine days ago, according to data recorded by his pacemaker.

Betsy Arakawa was a classical pianist, creative partner and supportive wife who loved watching DVDs with her husband Gene Hackman.

Santa Fe County Sheriff Adan Mendoza told NBC's “Today” show that investigators were trying to sort out conflicting stories about the doors. He said several doors were unlocked and a rear door was open, which allowed two dogs that survived to go in and out. He also said he thinks the front door was closed but unlocked.

Authorities say there were no signs of foul play, but the circumstances are “suspicious enough” to warrant a full investigation into the cause of death.