Britney Spears' access to her two baby boys has been withdrawn.
A Los Angeles Superior Court judge ordered Spears' children to be placed in the sole care of her ex-husband Kevin Federline, suspending the pop star's visitation rights until "further order of the court."
A hearing has been set for 14 January which will determine how their bitter custody battle is to proceed.
The court ruling came after a dramatic 24 hours for Spears, who has rarely been out of the tabloid headlines over the past year following a string of bizarre incidents.
Last Thursday she was wheeled out of her Los Angeles mansion on a stretcher and taken to the Cedars Sinai hospital for evaluation following a three-hour custody standoff.
Spears had reportedly refused to release her children Sean Preston, two, and Jayden James, one, to Federline's bodyguard.
Video footage of the aftermath of the incident showed Spears alternately smiling and looking distraught as she was lifted into an ambulance.
Los Angeles Police Department spokesman Jason Lee said Spears was being detained and evaluated in hospital because officers had found her under the influence of an unknown substance.
Federline's lawyer Mark Vincent Kaplan said he took no satisfaction for the court ruling in his client's favour.
"I am not happy about anything that has happened recently," he told reporters. "There are no winners right now."
