'Everybody Loves Raymond' Star Doris Roberts Passes Away At 90

US actress and Everybody Loves Raymond star Doris Roberts has tragically passed away at 90 years of age. 

As Fairfax reports, spokeswoman Janet Daily said Roberts died in her sleep, though the cause of death is still unclear. 

Daily was told of Roberts' death by her son on Monday. 

The Missouri-born performer scored four Emmy awards for her run as Marie Barone on the hugely successful sitcom, while she also appeared in a number of popular films including National Lampoon's Christmas Vacation and Grandma's Boy. 

A number of actors, friends and celebrities, including Roberts' Everybody Loves Raymond co-stars have paid tribute to the actress. 

"Doris Roberts had an energy and a spirit that amazed me," actor Ray Romano said in a prepared statement.

"She never stopped. Whether working professionally or with her many charities, or just nurturing and mentoring a green young comic trying to make it as an actor, she did everything with such a grand love for life and people and I will miss her dearly."

Fellow co-star Brad Garrett said, "I am deeply saddened by the passing of Doris Roberts, an amazing lady and brilliant actor.

"Doris was vibrant and full of life both on and off the stage, and I am so grateful we shared so many wonderful memories. I will miss her greatly and will always remember her incredible kindness, humor, talent and heart."

To my beloved Marie - RIP. pic.twitter.com/TtZCySQnLK

— Patricia Heaton (@PatriciaHeaton) April 18, 2016

We loved our mom, the great #DorisRoberts. A wonderful, funny, indelible actress and friend. pic.twitter.com/539JOa8EWo

— Phil Rosenthal (@PhilRosenthal) April 18, 2016

.@doris_roberts, you’ve brought so much joy to this world. #RIPDorisRoberts pic.twitter.com/ZcxESa3TOI

— MonicaHoranRosenthal (@MHoranRosenthal) April 18, 2016

I was just at an event a few weeks ago and met Doris Roberts for the first time. What a great person she was. So sad she's gone. RIP Doris.

— Paul Feig (@paulfeig) April 19, 2016

Worked with Doris Roberts when I was six. So kind, talented, and giving: I went on to work with Children Affected By AIDS because of her.

— Mara Wilson (@MaraWritesStuff) April 19, 2016

Rest In Peace our funny lady. #DorisRoberts #comedygreatness https://t.co/y1H1S4F6dt

— Leah Remini (@LeahRemini) April 19, 2016

RIP @doris_roberts - you were a dream to work with. Such beauty, so funny and so charming. @bobsaget @JohnStamos pic.twitter.com/dFqmq7KuLL

— Dave Coulier (@DaveCoulier) April 19, 2016

#DorisRoberts you were one of the funniest people to work with, you lived life to the fullest in NZ. We will miss u pic.twitter.com/34N8PbbQlB

— AshleyTisdaleFrench (@ashleytisdale) April 19, 2016