Demi Moore reacts to Rob Reiner's murder: 'unfathomable devastation'

Demi Moore is mourning the passing of great filmmaker Rob Reiner.

Taking to her Instagram handle on Monday, the 63-year-old actress paid an emotional tribute to the late director and his wife - who were found unresponsive at their home in LA on December 14.

"There are no words to truly express the unfathomable devastation of losing Rob and Michelle Reiner," Demi began the emotional note.

Sharing how "intertwined" their lives were, The Substance actress wrote, "Our kids grew up together, we worked together, and as our lives intertwined personally and professionally I will always cherish the moments and memories of what we shared,"

"They were amazing people and wonderful parents who gave of themselves to make the world a better place," she went on.

Concluding the note, Demi penned, "My heart, thoughts, and prayers are with their family, friends, and all that are affected by this tragedy."

For those unversed, Demi starred in Rob's 1992 thriller A Few Good Men.

Rob and his wife, Michele Singer, were found dead at their home in Los Angeles on December 14. As per the police, the couple’s son, Nick, is "responsible" for their deaths.