Pop star Britney Spears was taken to hospital for tests to see if she was under the influence of alcohol or drugs and for a psychological evaluation after police were called to her home Thursday night to mediate a custody dispute, a police spokesman said.
Spears appeared to be conscious as she was rolled out of her Studio City home on a gurney about three hours after police and ambulances arrived there.
The children were returned to their father, Kevin Federline, who has primary legal custody of the two sons, a police spokesman said.
Doctors at Cedars Sinai Medical Center in Los Angeles will decide whether to invoke a California law that allows a patient to be held for psychological evaluation for 72 hours, the police spokesman said.
Aerial video provided by local television station helicopters showed Spears on a stretcher and surrounded by police and paramedics as it was rolled to an ambulance near her home.
Spears has been in a heated battle with ex-husband Kevin Federline over custody of their two sons, Sean Preston, 2, and Jayden James, 1.