Legendary comedian, writer, producer, director, and actor Carl Reiner, who rose to fame in the 1950s as part of Sid Ceasar's legendary comedy show and went on to create television shows and direct movies, has died at the age of 98.

Reiner's assistant, Judy Nagy confirmed that Reiner died of natural causes Monday at his home in Beverly Hills.

Reiner was active well into his 90s and was known for saying he got up every morning and checked the obituaries. "If you are not in them, you eat breakfast," he would say. IN 2017, he was featured in a documentary on HBO of the same name that looked at himself and other aging entertainers.

He was active on his Twitter account, where he was a vocal critic of U.S. President Donald Trump. His last tweet came just hours before he passed.

Born and raised in New York City, Reiner first came to be known as a writer and cast member on Sid Ceasar's "Your Show of Shows" in the 1950s. It was there he met is lifelong friend and comedy partner comedian, writer and film producer Mel Brooks. The two went on to perform "The 2000 year Old Man" together, first in the 1960s, and then again in sequels into the late 1990s.

In the early 1960's, Reiner created the hit television comedy "The Dick Van Dyke Show," about a comedy writer and family man. He appeared on the show himself as the difficult boss of the main character, played by Dick Van Dyke.

Reiner turned a novel he wrote, "Enter Laughing" into a Broadway play, and the first of many movies he would direct. In the 1970s and 80's, directed and helped write four movies with comedian Steve Martin.

He acted in several movies, including the relatively recent "Ocean's Eleven" and its sequels with George Clooney.

Reiners son, Rob, himself an actor, director, and activist from his Twitter account wrote Tuesday: "Last night my dad passed away. As I write this my heart is hurting. He was my guiding light."

Three days ago, from his own Twitter account, Reiner wrote: Nothing pleases me more than knowing that I have lived the best life possible by having met & marrying the gifted Estelle (Stella) Lebost---who partnered with me in bringing Rob, Annie & Lucas Reiner into to this needy & evolving world"