Kevin Federline Takes Son Home from Hospital
01/04/2008 AT 08:50 AM EST
Custody of their children, Preston and Jayden, was transferred over to Federline when Spears, 26, was taken out of her home on a gurney and rushed by ambulance to Cedars-Sinai. Police said she was "under the influence of an unknown substance."
Keep checking back to PEOPLE.com for the latest updates from Cedars-Sinai Medical Center. (PHOTOS: Britney in the ambulance.)
PHOTOS: See the latest pics from Britney Spears's troubled life.