The Young And The Restless star Jeanne Cooper was admitted to the Intensive Care Unit (Icu) of a Los Angeles hospital last week (begs08Apr13) after succumbing to an unknown illness, according to U.S. reports.

The 84-year-old actress, who played Katherine Chancellor on the hit U.S. soap opera for nearly four decades, is in critical condition at Cedars Sinai Hospital, according to CBS Los Angeles.

Her actor son, Corbin Bernsen, took to his page on Friday (12Apr13) to inform fans of his mother's condition.

In a series of posts over the weekend (13-14Apr13) he wrote, "Need some prayers for my mom tonight. Pretty rough. Won't elaborate now, but I believe there's still more purpose for her on this journey, but that's not my call. I love her so much. I want peace for her. I hope this is okay to share with all of you who know and love her, you are my friends and in a sense part of my family and community...

"All continues to be stable this morning (13Apr13). Still, hurdles in upcoming hours, but this woman I have been so incredibly fortunate to call my mother, my mentor and honestly my inspiration... suffice to say the greatest boxers of all time aren't half the fighter she is."

Bernsen later wrote to thank fans for their support and vowed to continue with updates on his mother's health.