Dec. 16 (UPI) -- Former first lady Michelle Obama says she and her husband, ex-President Barack Obama, were supposed to see Rob and Michele Reiner on the day they died, allegedly at the hands of their son, Nick.

The beloved Stand By Me and The Princess Bride filmmaker and his wife were found by their daughter, Romy, stabbed to death in their Los Angeles home on Sunday.

Nick was arrested in connection with the homicides.

Michelle Obama reflected on her long friendship with the Reiners when she stopped by Jimmy Kimmel Live! Monday.

"We've known them for many, many years, and we were supposed to be seeing them that night, last night, and we got the news," Michelle Obama said.