Wu, who joined the NYPD in 2016, is in custody, and charges against her are pending.
One of the dead woman’s friends told the Daily News on Wednesday that Li and Wu lived together in Bay Ridge until about a month ago, when they broke up.
“She was possessive. Jenny Li just couldn’t take it anymore,” the 21-year-old friend said. “This cop is a psychopath. She was stalking her ex for a month.”
Wu was sitting on Li’s bed when she and her new girlfriend came home, the friend said.
“She did not walk into her ex and her lover. She was intruding her ex’s house without consent. She was trespassing,” the friend said.
Shortly after the breakup, Wu showed up at Li’s home one morning, and motioned to the gun in her waistband when Li and the other woman came out, the friend said. Li didn’t report what happened to police, the friend said, because “they still care for Yvonne because they are friends,” the friend said.
Theresa DiGirolamo, who lives up the block, said she heard what sounded like a paper bag popping, then saw one of the victims taken away by ambulance.
“It’s like a pop, pop, one, two, three. Then four and maybe five,” she said.
DiGirolamo walked to the corner, and saw medics loading one of the women into an ambulance, “her face like gray, like no life, lifeless.”
“This is a very quiet neighborhood. This is shocking for everybody,” she added.
(Kerry Burke contributed to this story.)
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