Whitney Houston's sister-in-law has insisted that the star's death was not accidental, and that bereaved Bobbi Kristina is not safe.

Leolah Brown spoke to Access Hollywood about her opinions on Whitney's sad death last month in the wake of yesterday's allegations that it was an accident.

She said: "I am concerned about my niece Bobbi Kristina, yes. 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."

Her attorney Reginald Mason added, "There are persons that possibly would want to take advantage of Bobbi Kristina's fragile state of mind".

Later in the interview, Leolah, who is the sister of Whitney's ex-husband Bobby Brown, called for the Beverly Hills Police Department to be as thorough as possible in their investigation into the 'I Will Always Love You' singer's passing.

"I believe Whitney's death was not accidental No," she said. "My attorney has advised me not to get into that at all. But it's very important to know that she did not just pass away like that.

"And if it's the last thing that I do, I'm going to find out what truly happened to my sister."