911 AUDIO
Gene Hackman and his wife were inside their home, not moving ... and the sight of them got the 911 caller very emotional, TMZ has learned.
We've obtained the audio of the 911 call that led to police discovering the bodies of Hackman and Betsy Arakawa ... and, an unnamed caretaker of the area can be heard frantically pleading for the dispatcher to send someone to the house.

The call starts with the caretaker, whose name is redacted, saying he believes they've just stumbled across one or two dead bodies -- he seems unsure at the time of the call -- and they need immediate assistance.