Whitney Houston's daughter, Bobbi Kristina, was reportedly placed in a medically induced coma after she was found unresponsive at her home early Saturday morning.
According to CBS, Brown's husband, Nick Gordon, and friend found the 21-year-old face-down in a tub filled with water and immediately started CPR until police arrived.
Sources said police performed life-saving measures until paramedics arrived at the Roswell, Ga. home. She was taken via ambulance to North Fulton Hospital and is currently in the intensive care unit. Doctors were able to stabilize Brown and she is said to be breathing but was placed in a coma because of swelling in her brain, TMZ reports.
"She's still breathing; she is alive," said Officer Lisa Holland, a police spokeswoman, to CBS Radio News.
"We are interviewing all the family members and friends that were at the house at the time," Holland added. "We don't know that if it was an accident or what this could be."
Sources told TMZ that police searched the home for signs of drug use but they didn't find anything. Brown is the daughter of Bobby Brown and the late Houston. The "I Have Nothing" singer died at the age of 48 on Feb. 11, 2012.
She was found in a bathtub in the Beverly Hilton hotel on the eve of the Grammy Awards. A coroner determined the cause of death was accidental drowning and said heart disease and cocaine use contributed to her death.
