A spokeswoman for Michael Jackson's father says the musical family's patriarch has suffered a mild stroke.
Angel Howansky says Joe Jackson went to a Las Vegas hospital late on Wednesday night when he had trouble standing up and walking.
She said the 83-year old Joe was having pains in his head but reports he is feeling fine and should be released on Friday.
She says he called a friend who drove him to the hospital.
Joe's wife, Katherine, is reportedly on her way to Las Vegas to be with him. Joe has maintained a residence there for many years while his wife lives in Los Angeles, where she cares for the late pop star's children.
Ms Howansky said Joe has had small strokes at least twice before this.