Questions Raised Over Whereabouts of Michael Jackson's Mother

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There is concern Katherine Jackson, the 82-year-old matriarch of the famous Jackson music family may be missing, after Michael Jackson's daughter, Paris, tweeted that her grandmother has been missing for the past week, but other family members and her attorney say she is fine.

"Yes, my grandmother is missing. I haven't spoken with her in a week I want her home now," Paris Jackson tweeted.

Jermaine Jackson, one of Michael Jackson's brothers, had tweeted Friday that his mother was in Arizona, following doctor's orders to rest.

"At this time there is no indication that a crime has been committed whatsoever," Los Angeles County Sheriff's Department spokesman Steve Whitmore told ABC News. "And there has been social media from representatives of the family and family members that say that she is fine and with family."

Whitmore said police believe that Katherine Jackson is staying with relatives, but the Sheriff's Department is trying to speak with her to be certain she is OK, because a family member filed a missing person's report Saturday night at the Malibu/Lost Hills Sheriff's Station.

Katherine Jackson reportedly left her home in Calabasas, Calif., July 15 to fly to Albuquerque to watch her four sons in concert. But since then, Paris says she hasn't been able to get in touch with her grandmother. Paris and her siblings have been living with their grandmother since their father died three years ago.

Katherine Jackson's attorney, Sandra Ribera, released a statement saying that Jackson left her home with plans of attending her sons' concerts, but did not end up going to any of the performances.

"Prior to her departure, a doctor was brought to her home and represented that he had been sent from the office of her longtime physician. Based on this representation, Mrs. Jackson agreed to meet with the doctor who subsequently ordered her to fly rather than drive to her sons' concerts. Mrs. Jackson followed what she believed to be her doctor's instructions," the statement said. "Moreover, Katherine Jackson's longtime physician recently confirmed that his office did not send a doctor to Mrs. Jackson's home last weekend before she left on her trip. It has further been discovered that the doctor that Katherine Jackson last saw has been publicly reprimanded by the California Medical Board for fraudulent activities and has ties to Dr. Conrad Murray."