On Monday morning, 16-year-old Savion Lewallen was stabbed while trying to rob, with four others, 19-year-old Khari Noerdlinger, in Edgewater, New Jersey, NBC New York reports. Noerdlinger’s mother is Rachel Noerdlinger, former chief of staff to First Lady Chirlane McCray.

Officials said Khari Noerdlinger stabbed Lewallen in the leg in the process of defending himself during the attempted robbery. Lewallen died of the wound at Palisades General Hospital. Noerdlinger, who allegedly tried to remove evidence from the scene, was arrested Monday on charges of aggravated manslaughter, weapon possession, and hindering apprehension.

At a hearing on Tuesday, ABC 7 reports, prosecutors claimed that Noerdlinger knew the victim. “He had a pre-existing relationship with the victim, who we identified and will continue to identify as the S.L. He had this pre-existing relationship,” Assistant Bergen County Prosecutor Danielle Grootenboer said. “The evidence will show that they also shared a business together. The evidence showed, and does show, that they were in fact drug dealers.”

Defense attorney Jeffrey Lichtman said Noerdlinger—who pleaded not guilty—had acted in self defense. “They were looking to kill him,” Lichtman said. “So, for his trouble—for trying to stay alive—Khari Noerdlinger is now being charged with manslaughter.”

“The fact is that he was attacked, attacked by armed people.”

Police have also filed charges of conspiracy to commit armed robbery against Mirleny Tremols, 35; Kevensky Lubin, 18; Richard Jean-Pierre, 18; and Calim Gaspard, 23, the Journal News reports.

Noerdlinger left City Hall in 2014, after reports emerged that she was dating an ex-con, Hassaun McFarlan, who referrred to police as “pigs.” From DNAinfo:

Court and police records show that the two have lived together for nearly two years.

McFarlan, 36, has been arrested at least five times, including for the fatal shooting of a teenager over a down jacket, records show.

Two of the arrests occurred while he was dating Noerdlinger, a former aide to the Rev. Al Sharpton. While they’ve been an item, McFarlan has also trashed police officers on his Facebook account, referring to them as “pigs” in two posts.

In one online rant, McFarlan said, “I cant come outside without the pigs f——— with me in the hood.”

Lewallen was recently sentenced to six months in jail on charges of holding and assaulting a 15-year-old girl, who police said he had a history of harassing, for an hour and a half in the woods near a high school. He was released with credit for time served (he’d spent 164 days in jail, on $75,000 cash bail, awaiting sentencing).

Photo via AP Images. Contact the author of this post: brendan.oconnor@gawker.com.