Whitney Houston's Daughter In Medically Induced Coma, Source Tells CNN

Whitney Houston's daughter, Bobbi Kristina Brown, was placed in a medically induced coma after she was found face-down and unresponsive in a bathtub full of water, a source close to the family said. Brown, 21, "was not breathing" when a man identified as her husband found her Saturday morning inside her townhouse in the Atlanta suburb of Roswell, Georgia.

He called 911 and performed CPR until public safety officers arrived and took over, said police spokeswoman Lisa Holland.

Brown was taken to a local hospital, where "she is still alive and breathing. Other than that, I don't know her condition," Holland said Saturday.

Nobody knows what caused Brown's unresponsiveness, Holland said, but police consider it a medical incident at this time.

She said investigators had found nothing to indicate it was drug- or alcohol-related.