Natalie Cole, the singer and songwriter best known for the songs “Unforgettable,” “Inseparable” and “This Will Be,” has died, THR confirmed. She was 65.

Publicist Maureen O’Connor said that Cole, the daughter of legendary performer Nat King Cole, died Thursday night at Cedars-Sinai Medical Center in Los Angeles due to “complications from ongoing health issues.”

Her family released a statement:

“It is with heavy hearts that we bring to you all the news of our Mother and sister’s passing. Natalie fought a fierce, courageous battle, dying how she lived..with dignity, strength and honor. Our beloved Mother and sister will be greatly missed and remain UNFORGETTABLE in our hearts forever.”

Cole’s mother was the late singer Maria Hawkins Cole.

She received a kidney transplant in May 2009 and had battled Hepatitis C. Through the years, she struggled with drug addiction.

Cole’s 1991 jazz album, “Unforgettable … With Love,” featuring numerous standards sung by her father, sold 14 million copies.

The Recording Academy released the following statement on the passing of Cole:

We are very saddened to learn of the passing of one of music’s most celebrated and iconic women, Natalie Cole. A nine-time Grammy winner and MusiCares Person of the Year honoree in 1993, Natalie followed her legendary father into the music business with magnificent hits like “Inseparable,” “This Will Be” and “Unforgettable,” achieving multiplatinum, worldwide success in her own right. We’ve lost a wonderful, highly cherished artist and our heartfelt condolences go out to Natalie’s family, friends, her many collaborators, as well as to all who have been entertained by her exceptional talent.

Our thoughts and prayers are with her family, friends and loved ones.