Cissy Houston, Whitney Houston’s mother, died at her home in New Jersey while receiving hospice care for Alzheimer’s disease. She was 91.

Houston’s daughter-in-law Pat Houston confirmed her death in a statement obtained by Fox News Digital on Monday. When the musician died, she was surrounded by her family.

“Our hearts are full of pain and sadness. We are losing the matriarch of our family,” Pat said in a statement. She noted that her mother-in-law’s contributions to music and culture were “unprecedented.”

Whitney Houston’s mother, Cissy Houston, has died. She was 91. (Getty Images)

She continued: “Mother Cissy was a strong and prominent figure in our lives. A woman of deep faith and conviction who cared deeply about family, pastoral care and community. Her career spanning more than seven decades in the music and entertainment industry will remain the top priority of our hearts.

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Houston was a member of the Sweet Inspirations, a musical group with Doris Troy and her niece Dee Dee Warrick. The musical group provided back-up vocals for Otis Redding, Lou Rawls, The Drifters and Dionne Warwick.

The Associated Press contributed to this report.