Kelly Rowland is mourning the loss of her mother.

According to E! News, Doris Rowland Garrison died Tuesday in Atlanta after going into cardiac arrest the day prior. She was 66 and would have celebrated her birthday on Saturday.

“It is with deep sadness that I announce the passing of my mother, Doris Rowland Garrison,” said the Destiny’s Child singer in a statement. “She was an incredible soul who made countless sacrifices so that I could become the woman—and now mother—I am today.”

She thanked her friends and fans for their thoughts and prayers. “We humbly appreciate all the love and support and only ask for privacy during this difficult time.”

The sad news comes after Kelly and her husband, Tim Witherspoon, welcomed a baby boy named Titan Jewell last month. She shared her joy by releasing a new song dedicated to her son called “Mommy’s Little Baby.”