Apparently both he and his wife were stabbed to death in their home most likely by their son. No matter what you think about him personally, it's quite the tragedy. He directed a few of my favorite movies when I was a kid.
Having both of your parents murdered by your brother is something out of a movie, there's not enough therapy in the world for that
What a terrible way to go out... 78 and 68 years old and your son stabs you to death. BTW, not sure why anyone would think poorly of Rob Reiner, unless they're a weirdo.