Fetty Wap's four-year-old daughter Lauren Maxell recently passed away, and was publically mourned by both Fetty and her mother Turquoise Miami.

Neither announced the cause of death.

Today, TMZ reported she died from a heart problem.

Lauren died due to heart arrhythmia, caused by problems she's had since birth. https://t.co/obdVlJuC94

— TMZ (@TMZ) August 5, 2021

Lauren died due to heart arrhythmia, caused by problems she's had since birth. https://t.co/obdVlJuC94

— TMZ (@TMZ) August 5, 2021

"Lauren died due to heart arrhythmia, caused by problems she's had since birth," the website reported.

Miami was outraged that TMZ (and Hollywoodunlocked) would leak that info.

“Her death certificate says cardiac arrhythmia due to a congenital heart defect,” she typed since-deleted post. “BUT THAT IS NOT THE FULL CAUSE OF HER DEATH THAT IS WHY THE AUTOPSY HASN’T COME BACK! HOW DARE YALL GO STEAL MY CHILDS DEATH CERTIFICATE AND ANNOUNCE THE CAUSE OF DEATH BEFORE ANYBODY WAS READY. THERE IS A REASON WHY! HER AUTOPSY ISN’T BACK YET ASSHOLE @TMZ_TV @hollywoodunlocked.”

Hollywood Unlocked has removed their story, but TMZ hassn't