ABC

In a recent interview with Entertainment Tonight, Dionne Warwick revealed how she thinks her cousin Whitney Houston died.

"You know, in all honesty, I think she had a heart attack, that's what I think happened to her," Dionne said when asked what she thought authorities would say was the cause of death. The 71-year-old singer, who is working on an untitled "50th Anniversary" studio album, said she didn't think drugs played a role.

"I don't know if it's that or not. I think her heart just gave out," she added.

Dionne also shed light on the mood on board the private jet, loaned by movie mogul Tyler Perry, that transported Whitney's body back to her native New Jersey. "It was a combination of things: stories, laughter, tears. All the emotions that you feel when somebody very near to you passes," she said.