Bobby Brown’s sister, Leolah Brown, came to his defense during an interview that aired last night on Access Hollywood.

For the first time since Whitney Houston’s death, Leolah Brown, talked about her sister-in-law. Leolah says that she does not think the Grammy Award-winning singer’s death was an accident.

“I believe Whitney’s death was not accidental. No. It’s very important to know that she did not just pass away like that, and if it’s the last thing I do, I am going to find out what truly happened to my sister.”

WATCH LEOLAH BROWN TALK ABOUT WHITNEY ON ‘ACCESS HOLLYWOOD’ HERE

Leolah also expressed concern for her niece, Bobby Kristina. There have been several reports since Houston’s passing that Bobby Kristina is emotionally unstable, and Leolah believes that her niece is in danger.

“I am concerned about my niece, Bobbi Kristina. Krissy is not safe right now. I want to say to Krissy that it’s very, very, very important that she does not trust anybody at this time. Anybody except her father, her grandmother Cissy, and myself. And I mean that.

Leolah and her attorney, Reginald Mason, did not specify who may try to harm Bobbi Kristina.

“There are persons that possibly would want to take advantage of Bobbi Kristina’s fragile state of mind,” Mason claimed.

She also said that her brother Bobby is not doing well, and claims the “My Prerogative” singer is not to blame for Whitney’s demise.

“Bobby had nothing to do with Whitney doing drugs in the past or whatever, Bobby never had anything to do with that.”

Follow Chris Witherspoon on Twitter at @WitherspoonC