David McCallum, best known for his role on the long running TV show “NCIS”, has died at the age of 90.

According to BBC News, he passed away on Monday due to natural causes.

In a statement released by CBS, his son Peter McCallum called him “the kindest, coolest, most patient and loving father” who always put family before self.

The official NCIS page on the social media site X also extended condolences, saying “David was a gifted actor and author, and beloved by many around the world. He led an incredible life, and his legacy will forever live on through his family and the countless hours on film and television that will never go away. We will miss his warmth and endearing sense of humor that lit up any room or soundstage he stepped onto, as well as the brilliant stories he often shared from a life well-lived.”

The British actor became a star by playing a secret agent in 1960s spy drama “The Man from U.N.C.L.E.”.