Michael Jackson's mother, Katherine, was reported missing to the Los Angeles County Sheriff's Department Saturday night.
Katherine's nephew, Trent Jackson, asked cops to help find the family matriarch after family members were unable to reach her all week, CNN reported.
Police spokesman Anthony Moore confirmed to the Daily News in a statement that a report had been filed by a family member who was "concerned for her well-being."
The statement said that Katherine "is reportedly with family members" and deputies are continuing to try to reach her.
Jermaine Jackson said that his mother is doing fine and is simply "resting up" in Arizona.
"I want to reassure everyone (inc all sudden medical experts) that Mother is fine but is resting up in AZ on the orders of a doctor, not us," Jermaine Jackson tweeted on Friday afternoon.
"This is our mother and her health is paramount. We are not inventing or plotting anything. We are following doctor's advice. Period," he added.
The missing persons report comes after five of Michael Jackson's disinherited siblings penned a letter, made public Wednesday, claiming that the late singer's will is "fake, flawed and fraudulent."
Tito, Randy, Jermaine, Janet and Rebbie Jackson accused the King of Pop's lawyers of forging Michael's signature on the will and demanded that they resign immediately as executors of their brother's estate.
MICHAEL JACKSON'S CUT-OUT SIBLINGS SAY LAWYERS FORGED HIS SIGNATURE ON WILL
The cut-out siblings also claimed Jacko's lawyers lied to get Katherine Jackson to increase their share of the gross income from Michael's estate.
“Your actions are affecting her health, and on top of that, we’ve just found out she recently had a mini-stroke,” the Jacksons wrote.
Katherine Jackson's lawyer, Sandra Ribera, told CNN that Katherine flew to Albuquerque, N.M. on July 15 to attend a Jacksons brothers concert two days later. She was traveling with her oldest daughter, Rebbie.
Ribera said that each time Michael Jackson's daughter Paris tried to reach Katherine in the past week, she was told that she could not speak to her.
"I'm concerned that [Katherine's] not safe," Ribera added.
Paris Jackson took to Twitter Sunday morning to ask for help in finding her grandmother.
"Yes, my grandmother is missing. i haven't spoken with her in a week i want her home now," the 14-year-old wrote.
"If anybody sees my grandmother, please call the authorities or this number- (818)-876-0186 it's the security's number .. thank you so much," she added.
Katherine Jackson has been taking care of Michael Jackson's three children - Prince, 15, Paris, 14, and Blanket, 10, - since Michael's death in June 2009.
Read more: Katherine Jackson, mother of Michael Jackson, reported
I just hopped onto twitter a moment ago, and Paris is indeed tweeting her grandmother is missing. Seems like Jermaine would TELL the kid(s) where she is beforehand, if what he says is true.