Whitney Houston and Bobbi Kristina Brown
The late Whitney Houston with her daughter Bobbi KristinaReuters

Bobbi Kristina Brown, the daughter of the late Whitney Houston, will be taken off life support within hours, TMZ reports.

According to the celebrity news site, her father Bobby Brown and maternal grandmother Cissy Houston have agreed to end the 21-year-old's medically induced coma on Wednesday (11 February), which marks the three-year anniversary of her mother's death.

Brown has been in a comatose state at Emory University Hospital, Atlanta, since she was found face down in a filled bath at her home by her boyfriend Nick Gordon and a friend on 31 January. Gordon administered CPR until the ambulance arrived on the scene and continued to carry out lifesaving procedures.

The harrowing incident echoes the death of her mother on the eve of the 2012 Grammys. Houston passed away on 11 February 2012, when she was found unresponsive in a bath of a Beverley Hills hotel. A coroner later concluded her death was as a result of accidental drowning, though heart disease and cocaine use were contributing factors in her death.

Cissy Houston is said to believe allowing Brown to pass away on the anniversary will "bond mother and daughter for eternity".

Meanwhile, police are reportedly investigating Gordon for foul play after Brown sustained unexplained injuries before she was found unconscious in the bath.

"Nick hasn't been to visit Bobbi since she moved to this hospital," a source told US Weekly. "I think he's banned from seeing her. Nick spent the entire first day with her, but hasn't been back to see her."

Houston left her entire estate to her only child, although her will stated that Brown must wait until she is 30 to inherit everything.