Ex-roomie: Bobbi Kristina 'probably' smoked crack

Months after her death, details continue to emerge about Bobbi Kristina Brown, the only daughter of Whitney Houston and Bobby Brown, and the days before she was found unresponsive in a bathtub of her home in January.

Danyela D. Bradley, who lived with Brown and Brown's former boyfriend Nick Gordon in Atlanta, said in a deposition acquired by NBC station WXIA of Atlanta that Brown used marijuana and may have used crack cocaine and heroin in the days before she was found unconscious. Brown, 22, never regained consciousness and died on July 26.

Bradley only testified to actually seeing Brown using marijuana, and said in the deposition that Brown "probably smoked crack often, and also did heroin."

"I would just visually see her physical being and I could just tell," Bradley explained. "She wouldn't have to tell me."

Documents: Nick Gordon injected Bobbi Kristina with toxic mixture

Bradley gave the deposition as part of a lawsuit against Ford Motor Co. filed by Russell J. Eckerman, who is seeking damages in connection with a car accident on Jan. 27 -- just three days before Brown was discovered unresponsive. Eckerman alleges that Brown was speeding and tailgating before she collided with his car.

The Brown estate has also filed a separate lawsuit against Gordon. It alleges that he drugged Brown with a "toxic cocktail" and then tried to drown her in a bathtub.