Paris Jackson's apparent suicide attempt comes as her family and AEG are locked in a legal battle over the death of her father, Michael Jackson.
Paris Jackson is a possible witness in the civil trial.
The suit filed by Katherine Jackson, Michael Joseph Jackson Jr., Prince Michael Jackson II as well as Paris Jackson alleges that AEG negligently hired and supervised Dr. Conrad Murray, who -- in an attempt to help the singer sleep -- gave him a fatal dose of the anesthetic propofol.
PHOTOS: Jackson-AEG wrongful death case
They say AEG pushed Jackson to prepare for a tour that he was not ready for physically. AEG says that it was Jackson's decision to hire Murray and that the company had recommended a British doctor.
Jackson died in 2009, two weeks before his "This Is It" tour was scheduled to begin in London. Murray was convicted of involuntary manslaughter in 2011.
Sources said Paris Jackson was rushed to a hospital early Wednesday morning.
The Los Angeles County Sheriff's Department and Fire Department would say only that they responded to a "medical emergency" on the block where the Jackson family lives in Calabasas. The L.A. County Fire Department described the call as a "possible overdose" and said a patient was taken to a hospital.
One source, who spoke on the condition of anonymity, told The Times that the patient was Michael Jackson's daughter, Paris.
Jackson's former wife and Paris' mother, Debbie Rowe, also told Entertainment Tonight that Paris Jackson tried to commit suicide.
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