Bobbi Kristina's aunt speaks to reporters

Corrections and clarifications: An earlier version of this story misidentified Atlanta mayor Kasim Reed.

Leolah Brown, the sister of Bobby Brown, walked out of the funeral for her niece, Bobbi Kristina, Saturday afternoon to speak to reporters waiting outside St. James United Methodist Church in Alpharetta, Ga.

She said she left during the eulogy given by Pat Houston, the sister-in-law and former manager for Bobbi Kristina's superstar mother, Whitney Houston.

"I told her that Whitney is going to haunt her from the grave," she told the media, adding that the feud between the Brown and Houston sides of the the family was "just getting started."

Other funeral attendees told TMZ that Brown was escorted out by security when she interrupted Houston at the beginning of her speech.

Prior to the funeral, Brown expressed anger over the invitation, which encouraged guests to contribute to a foundation run by Houston in lieu of sending flowers.

The private ceremony came nearly six months after the only child of Grammy winner Whitney Houston and fellow singer Bobby Brown was found facedown and unconscious in her bathtub. She never regained consciousness to tell anyone what happened that morning.

Brown's hearse arrived from the Murray Brothers Funeral Home around 9:30 a.m., approximately two hours before a police escort ushered in a procession of vehicles carrying the Houston and Brown families as well as Atlanta Mayor Kasim Reed. Singer Monica and actor Michael Jai White were also seen filing into the church.

Nick Gordon, who claimed to be her husband, was reportedly not in attendance, despite his impassioned plea to Bobbi Kristina's father and aunt.

Bobbi Kristina's remains are expected to be interred alongside those of her mother Monday in New Jersey.