WATCH: Bobby Brown Breaks Down in Tears Over Daughter Bobbi Kristina’s Death

Nick Gordon Recalls Bobbi Kristina Brown's Final Moments
Nick Gordon is opening up about late girlfriend Bobbi Kristina Brown.
Bobbi Kristina Brown's Cause of Death Revealed
The official cause of Bobbi Kristina Brown's death has been disclosed.

Bobby Brown is ready to talk about Bobbi Kristina Brown.

For the first time, the singer is opening up about the untimely death of his only daughter with the late Whitney Houston, who passed away last July at the age of 22. In a new teaser for his emotional sit-down with 20/20’s Robin Roberts, Bobby breaks down in tears as he recalls saying goodbye to Bobbi Kristina one last time.

“The hardest thing I had to do in my life was to tell my daughter to let go,” he said. “My baby’s gone.”

Like her mother years ago, Bobbi Kristina was found unresponsive in her bathtub on Jan. 31, 2015 at her home in Roswell, Ga. She was then transferred to Emory University Hospital in Atlanta where she was placed in a medically induced coma for weeks before being moved to another facility in March. After having suffered from irreversible brain damage, Bobbi Kristina was pronounced dead on July 26, 2015, at Peachtree Christian Hospice.

A statement from the Fulton County Medical Examiner’s office later revealed that Bobbi Kristina’s cause of death was due to a combination of drowning and drug intoxication, complicated by cocaine use and heart disease. Marijuana, alcohol, a cocaine-related substance called benzoylecgonine, prescription anti-anxiety medication, and morphine were found in her system.

“The same thing that happened to my daughter happened to Whitney,” Bobby added.

Whitney was discovered dead in her bath at a Los Angeles hotel on Feb. 11, 2012, just days before the Grammy Awards.

Since Bobbi Kristina’s death, both Bobby and BK’s cousin have accused her boyfriend, Nick Gordon of murder. Gordon currently has an ongoing $10 million lawsuit with Bobbi Kristina’s family that claims that he had assaulted Bobbi Kristina and had been secretly stealing money from BK’s account before her death. The lawsuit also alleges that Gordon had given Bobbi Kristina a “toxic cocktail” that caused her to lose consciousness before she was placed in the bathtub.

“After her mom had passed she would use drugs to numb the pain she was feeling,” Gordon said of Bobbi Kristina earlier this year in an interview with the Daily Mail. “She started taking pain pills and Xanax and self-harming. You could see the scars on her arms.”

“We had a couple of miscarriages. We would have loved to have a kid but we weren’t planning on it yet and she was just such a young fragile person it took a toll on her,” he continued. “We wanted to get clean, settle down, get married, have kids.”