Bobbi Kristina Brown reportedly suffered facial injuries before she was found lifeless in her bathtub.
The 21-year-old aspiring actress - the daughter of the late Whitney Houston and Bobby Brown - was found lifeless in her Atlanta home late last month and police are said to be stepping up an investigation as to what happened to her after seeing a number of marks around her mouth, sources told WSB-TV.
It was previously claimed police have been looking into a possible altercation between Bobbi and her boyfriend Nick Gordon which took place over an hour before their friend Max Lomas discovered the unconscious starlet, who is currently fighting for her life in hospital.