ATLANTA (REUTERS) - Two relatives of singer Bobby Brown, whose daughter with Whitney Houston is said to be fighting for her life in Atlanta after being found unresponsive in a bathtub, got into a fight early Friday at a downtown hotel in the city, police said.

Officers were called to the W Hotel at about 1am after one of Brown's family members, Tina Brown, hit another relative, Shayne Brown, in the head with a bottle, Atlanta police spokeswoman Kim Jones said.

Shayne Brown suffered cuts and drove himself to the hospital, and Tina Brown left the scene before the police arrived, according to Jones.

No charges have been filed.

Police did not say how the family members are related to Bobby Brown.

Brown, a Grammy Award winner who began his career as front man for the R&B group New Edition, has been seen outside Emory University Hospital in Atlanta, where his only child with late pop star Houston has been reported to be receiving care.

Bobbi Kristina Brown, 21, was found face down in a bathtub on Saturday in her suburban Atlanta home, police said, nearly three years after her famous mother drowned in a hotel bathtub in Beverly Hills, California.

Houston, a six-time Grammy Award winner and actress who battled substance abuse, was 48 when she died on Feb 11, 2012. Authorities said cocaine use and heart disease contributed to her death.

A family source on Thursday denied media reports that Bobbi Kristina Brown had been taken off life support or declared brain dead.