Kris Jenner’s mom Mary Jo “MJ” Shannon’s cause of death was acute cardiopulmonary arrest.

Other conditions leading to her death included acute respiratory failure and metastatic lung cancer, which Shannon had for months leading up to her passing, according to the death certificate obtained by Us Weekly on Tuesday.

The 91-year-old died at a Los Angeles hospital on July 16 and was cremated on July 23, per the certificate. No autopsy was performed after her death.

As Page Six previously reported, Jenner announced her mom’s death on July 16 in an emotional Instagram post.

“Today, we said goodbye to my beautiful Mommy MJ. 😞💔,” the talent manager wrote at the time. “There are no words that could ever capture what she has meant to me or the heartbreak of having to say goodbye.”

Jenner, 70, credited her mother “the heart of [their] family.”

“She showed us how to love unconditionally and how to find joy in the little moments,” Jenner went on. “She showed me how to face life’s challenges with resilience and faith.”

In her emotional tribute, Jenner also thanked her mom for “every sacrifice [she] made, every piece of wisdom [she] shared, and every moment [she] loved [the family] so completely.”

Kris’ daughters Kylie Jenner and Kourtney Kardashian “liked” the post.

Several of the Kardashian-Jenner clan posted tributes of their own for their beloved family member.

Kim Kardashian initially came under fire the day of Shannon’s death for a poorly timed scheduled social media post of her vacation — but soon followed it up with a touching tribute dedicated to her “sweet” grandmother.

Shannon turned 91 in July 2025, with Kris posting about the festivities the following month.

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