An off-duty NYPD officer shot her ex-girlfriend and killed another woman, police say

• An NYPD officer is accused of shooting her ex-girlfriend and killing another woman while off-duty.
• An NYPD official who spoke to The New York Times anonymously identified the officer as Yvonne Wu.

An NYPD officer was arrested Wednesday after police say she shot her ex-girlfriend and killed another woman.

Assistant NYPD Chief Michael Kemper described the officer at a news conference as a 31-year-old who had worked for the department for five years and was recently assigned to a Brooklyn precinct, The New York Times reported.

A spokesperson for the department told Insider on Thursday that it is not releasing the name of the officer because charges are still pending, but a police official who spoke to the Times anonymously in order to discuss the ongoing investigation identified the officer as Yvonne Wu.

Police sources told the New York Daily News that Wu was off-duty when she went to the Brooklyn apartment of her ex-girlfriend, Jenny Li, and waited there for Li to show up with her new partner, Jamie Liang. According to the report, Wu opened fire and shot both Li and Liang in the chest when they arrived at the apartment, injuring Li and killing Liang.

Theresa DiGirolamo, a woman who lives a few doors down from Li's apartment, told The Times that she heard "four or five" sounds that sounded like a popping paper bag around 4:30 p.m. on Wednesday. DiGirolamo told the newspaper she didn't realize she might have heard a shooting until she saw paramedics load one of the women into the back of an ambulance.

Li made a call to 911 shortly after the shooting, The Daily News reported. Police sources told the paper that the operator could hear someone say "that's what you get" in the background of the call.

One of Li's friends told the Daily News that Li and Wu had been living together in Brooklyn before they broke up a month ago. The friend told the newspaper that Wu had been "possessive" during the relationship and that Li "just couldn't take it anymore."

Kemper said at the press conference that the shooting is being investigated as a homicide, the Times reported. Responding officers found Li on the bedroom floor and Liang in the living room, according to Kemper, who also described the off-duty officer as "calm and collected and very forthcoming" when police arrived at the apartment.

"Simply put, she confessed. That's all I'm going to say," Kemper said when asked what the off-duty officer told the responding officers, according to The Daily News.