The New Edition star's only child with his late ex-wife Whitney Houston has been comatose since she was admitted to hospital following a near-drowning incident at her home in January (15), and she was recently moved from a rehabilitation centre to a hospice after her legal guardians learned there was nothing more doctors could do to help the aspiring actress.

Brown's relatives were banned from visiting Bobbi Kristina earlier this week (begs06Jul15) amid allegations an unnamed relative has been trying to cash in on the tragedy by taking a sneaky snap of her in a coma as she clings to life, and offering up the shot to the highest bidder.

Her Aunt Leolah is now slamming the reports, insisting no one in her family is guilty of taking the insensitive picture.

According to TMZ.com, she says, "(The picture) was taken when no other Brown was around her. My brothers know this and we have already determined who we are sure it was not and, believe me, it was not a Brown!

"If it were up to me, the sick and sorry people that continue to have permission to see her, even still to this day, they would be completely cut out, never to lay eyes on her (Bobbi Kristina) again!"

Brown's comments come a month after she sparked a war of words with Bobbi Kristina's legal guardian Pat Houston over the care and welfare of the 22 year old, alleging the late Whitney Houston's sister-in-law told the New Edition star it was costing too much to keep his daughter alive.

Houston has since responded in part to the allegations, explaining she flew her ailing niece to Chicago, Illinois to meet with medical experts to make sure she was getting the best treatment possible. The doctors assured her and other family members that there was nothing else that could be done to save Bobbi Kristina.