Katherine Jackson's Attorney -- MJ's Kids Were 'Ambushed'

Katherine Jackson's legal team claims Michael Jackson's siblings have concocted a diabolical plot to remove Katherine from her home and her "beloved grandchildren" ... and part of the plan involved ambushing MJ's children.

Katherine's attorney released a statement saying, "Yesterday afternoon certain Jackson family members ambushed Katherine Jackson’s home after their vehicle tore through security gates on the tails of the SUV containing Michael Jackson’s children."

"After exiting their vehicles, Jackson family members ran up to Michael’s children as they yelled and began to aggressively grab at the cell phones in their hands. Out of concern for the well being of Prince, Paris, and Blanket Jackson, the children were forced to temporarily leave their home and have been taken to a safe location. An altercation ensued shortly thereafter and law enforcement arrived at the scene."

The statement continues, "Following the incident, it was learned that one of the family members who was part of the ambush admitted that a plan has been in place for the last three years to remove Katherine Jackson from her home and her beloved grandchildren."

"Prince, Paris, and Blanket Jackson have not heard from their grandmother since she left their home nine days ago to attend a series of her sons’ concerts on their Unity Tour. She never made the shows. Despite efforts to interview Katherine Jackson at her current location in Arizona yesterday, Los Angeles County Sheriffs confirmed that they were denied access to Mrs. Jackson by security for one of her children. “

The Michael Jackson Estate has also released a statement saying, "We are acutely concerned about the welfare of Mrs. Jackson, and most particularly with Michael's minor children."