(Reuters) - Bobbi Kristina Brown, the only daughter of late pop star Whitney Houston and singer Bobby Brown, was found unresponsive in a bathtub at her Georgia home on Saturday, but she was revived after being rushed to a hospital, police said.

The incident comes three years after Houston, a superstar who battled substance abuse issues, drowned in a bathtub in Beverly Hills, California, in February 2012. Authorities have said cocaine use and heart disease contributed to her death.

Brown, 21, was found at about 10:20 a.m. (1520 GMT) in the bathtub at her suburban Atlanta home by her husband and a friend, said Lisa Holland, public information officer for the Roswell Police Department.

Brown's husband, Nick Gordon, started CPR and police continued life-saving measures until an ambulance arrived and took her to the hospital.

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Bobbi Kristina Brown, daughter of the late singer Whitney Houston, poses at the premiere of "Sp …

"She's alive at the hospital," Holland said. She gave no other details.

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