Mariah Carey mourns the loss of her mother and sister.

The Grammy-winning megastar confirmed to People that Patricia Carey and Alison Carey died on the same day over the weekend.

“I am heartbroken to have lost my mother this past weekend,” Carey said of 87-year-old Patricia. “Unfortunately, in a tragic turn of events, my sister also lost her life that same day.”

“I feel blessed to have been able to spend the last week with my mother before she passed away,” she said. “I am grateful for everyone’s love and support and respect for my privacy during this impossible time.”

Carey, 55, is the youngest of three siblings. Patricia and Alison leave behind Carey and her brother Morgan Carey.

The cause of death for Patricia and Alison Carey was not disclosed in the report. According to the Times Union, she was 63 years old at the time of her death.

Patricia Carey was an opera singer and voice teacher who trained at the Juilliard School.

Carey and her mother sang a Christmas duet of “O Come, All Ye Faithful” for the 2010 ABC Christmas special “Mariah Carey: Merry Christmas to You” (see video below). They recorded the same song for their 2010 Christmas album “Merry Christmas II You.”

Mariah’s mother and father, Alfred Roy Carey, divorced when Carey was three years old. The family lived in Huntington, Long Island, and Carey lived with her mother after the separation.

Alfred Roy Carey, an aeronautical engineer, was 72 when he died of cancer in 2002. Carey dedicated the song “Sunflowers for Alfred Roy” to her father on her 2002 album “Charmbracelet.”

In her 2020 memoir, “The Meaning of Mariah Carey,” the singer wrote that she had a complicated relationship with her mother.

Carey also wrote that she was keeping her distance from Alison and Morgan. The Times Union report said she was estranged from Alison, who lived in Greene County, New York.

“Like many aspects of my life, my journey with my mother was full of contradictions and competing realities,” Carey wrote. “It was never black and white – it was a rainbow of emotions.”

Some of these feelings: “Pride, pain, shame, gratitude, jealousy, admiration and disappointment,” she said in the book, which she dedicated to Patricia Carey. “A complicated love connects my heart to that of my mother.”

According to the Times Union, Alison Carey filed a $1.25 million lawsuit against Mariah in New York State Supreme Court in 2020, claiming her sister defamed her in her memoir when she alleged that Alison drugged her at age 12, inflicted third-degree burns on her, and tried to recruit her for sex work.

“In order to preserve my sanity and peace of mind, my therapist encouraged me to literally rename and restructure my family,” Carey wrote in her book. “My mother became Pat to me, Morgan became my ex-brother, and Alison became my ex-sister.”

“I had to stop expecting that one day they would miraculously become the mom, big brother and big sister I dreamed of.”