took one of his sons from Cedars-Sinai Medical Center to his Tarzana home on Friday morning, after his ex Britney Spears
was hospitalized overnight.
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
.)–Pernilla CedenheimPHOTOS: See the latest pics from Britney Spears's troubled life.