One Day Before David Letterman Turned 70, His Mother Dies at 95

David Letterman’s beloved mother, a fixture on his late night shows and three-time Winter Olympics correspondent, died Tuesday at her Indiana home. She was 95.

Read: David Letterman's Most Important Moments Didn't Bring Laughter

Just a day before her famous son turned 70, Dorothy Mengering passed away at her home in Carmel.

Mengering first appeared on her son’s NBC series, Late Night with David Letterman in 1986, when the host would call into his mother’s home and chat with her on air.

Once Letterman moved to CBS in the mid-90s to kick off The Late Show, Mengering became a recurring guest.

She served as The Late Show’s Winter Olympics correspondent in cities like Lillehammer, Norway, in 1994, Nagano, Japan, in 1998, and Salt Lake City, Utah, in 2002. She would also record segments from her home around the holidays for the show and told her son how she was preparing certain meals for Thanksgiving.

Mengering would also perform her son's infamous "Top 10" on occasion.

While Letterman has not yet released a statement regarding his mother’s passing, his sisters, Jan and Gretchen, penned an obituary for the Indy Star. 

"Though her quiet life took a detour into the spotlight as she flawlessly stepped into the role of Olympics correspondent and pie baker on her son’s late night television show, she never lost her unassuming demeanor, a perfect foil for his comedy and her full life," the Letterman sisters wrote.

Read: David Letterman Calls Donald Trump 'Damaged Human Being' Over Behavior On Campaign Trail

Letterman’s successor, Stephen Colbert, paid tribute to his predecessor’s mother on Twitter.

Letterman, who has seldom been seen since his 2015 retirement after 33 years on the air, appeared in Brooklyn Friday as he inducted Pearl Jam into the Rock and Roll Hall of Fame at the Barclays Center.

Watch: A Look Inside Don Rickles' Childhood Apartment