Bobby Kristina Brown's family has been shut out from her room in hospice because security guards believe it was one of them who clicked the deathbed photo.
According to the reports, the security team had informed Whitney Houston's family that there was proof incriminating a Brown family member as the culprit, after which the 22-year-old singer's estate, run by her legal guardians, took the decision to ban the Browns.
However, the ban does not affect her father Bobby Brown, who's bent on finding the person responsible, TMZ.com reported.
It also believed that the culprit's identity in known but is kept under wraps for now.
Earlier, news broke that someone was selling the image, which hasn't been published so far, and had contacted various websites and magazines to make the deal with the highest bidder.