The cause of death for Mary Jo 'MJ' Shannon, the mother of Kris Jenner and a well-known figure on the Kardashian family reality shows, has been disclosed. Shannon died earlier in July at the age of 90, surrounded by her loved ones, according to her death certificate obtained by E! News. The certificate, filed with authorities, reportedly lists the cause of death, although the specific details have not been widely shared by the family. Shannon, often referred to as MJ, was a beloved presence on 'Keeping Up with the Kardashians' and its spin-offs, frequently appearing alongside her daughter and grandchildren. Her death was announced by Kris Jenner on social media earlier this month, with the family requesting privacy during their mourning. The release of the death certificate provides official confirmation of the circumstances surrounding her passing. Rolling Stone also reported the revelation, noting Shannon's status as a nonagenarian and her role as a favorite among fans of the Kardashians' shows. The family has not issued further public statements since the initial announcement. The cause of death, while now a matter of public record, remains a private matter for the family as they continue to grieve.