Bobby Brown's Sister Claims There's ''Strong Evidence of Foul Play'' in Bobbi Kristina Brown Investigation

Bobby Brown's sister is speaking out about Bobbi Kristina Brown's health and her concern over Nick Gordon.

In a new Facebook post Saturday afternoon, Leolah Brown claimed to followers that Gordon is "under investigation for the attempted murder of my niece Bobby Kristina Brown."

Police have not confirmed if Gordon is directly under investigation for any crime. In addition, a death has yet to take place making it too early for any person to be investigated for murder. 

She also alleges, "We have strong evidence of foul play. Until this investigation is completed by law enforcement, I would ask that you or anyone else not provide this individual a platform to spin this situation to his benefit." Her letter was personally addressed to Dr. Phil who will have Gordon on his show next week. 

E! News has reached out to Gordon's attorney for comment. 

E! News also confirmed just last week that Gordon had checked himself into rehab for undisclosed reasons after an intervention with the talk show host occurred in Atlanta.

While Gordon seeks treatment, Leolah hopes that he will speak to Bobby Brown and law enforcement in hopes of getting some answers.

"If Nick Gordon does not have the courage to speak with my brother Bobby Brown and/or law enforcement about what happened the day my niece's body was found in a bathtub, he does not deserve to have a platform to speak to anyone of your caliber until this investigation is concluded."

Hours later, Leolah posted another message on Facebook assuring us that she will no longer remain quiet when it comes to false reports in the press. 

"I am going to defend my family," she explained. "My niece Bobbi Kristina Brown's tragedy was also NOT done on the Brown's watch. Remember that as well. Yet, there are those who have always tried and continue to try to divide & conquer my family."

Bobbi Kristina remains in a coma at an Atlanta hospital more than a month after being hospitalized. While the future of her condition remains uncertain, Bobby Brown remains hopeful that good things are coming.

"We continue to request privacy in regards to my daughter's medical condition," he said in a statement to E! News just last week. "We thank everyone that supports Bobbi Kristina and God is hearing our prayers."