It happened early Sunday morning at East 55th and Foster Avenue in East Flatbush.
A black Mazda SUV was T-boned by a high-end Nissan GTR driven by 47-year-old off-duty NYPD Officer Rohan Shaw.
Earlier prosecutors announced charges of vehicular manslaughter, criminally negligent homicide, reckless driving, a speed violation and driving while ability impaired, against the officer, but now say they're holding off on those charges -- for now.
The driver of the Mazda SUV took off.
A 22-year-old woman in the SUV was taken to Kings County Hospital in serious condition and another passenger, 23-year-old Joanna Dixon died.
Dixon was out celebrating her birthday. Her father is distraught.
"Pain, pain," said Collin Dixon, Joanna's father. "I wish she were here, but we'll get through it."
He's still processing the sudden and tragic death of his daughter.
"So she was celebrating with her friends. Her stop was going to be the last stop," Collin Dixon said.
The York College student never made it home. Her friend remains hospitalized.
The young man that was behind the wheel of the Mazda allegedly ran a stop sign and fled the scene.
Joanna's father called him a "coward" and he had this to say to the cop, now facing a list of charges.
"You're still alive and my daughter's dead. And we can't bring her back. And it's painful, really painful. But God will see us through. I trust God and he will see us through," he said.
Friends and family left candles and flowers at the scene to remember her.
Shaw is due in court in Brooklyn later Monday.