The city is investigating the death of a 5-month-old girl from The Bronx, after her distraught mother alleged that a 911 dispatcher botched her address and was unable to send help in time.

According to the NYPD, at around 7:22 a.m. on August 19th, 5-month-old Isabella Glover was found unconscious and unresponsive inside her apartment at the Morrisania Houses at 450 East 169th Street, after her mother, Julia Knight, called 911. Isabella was transported to an area hospital and pronounced dead; the medical examiner's office has not yet confirmed her cause of death.

Knight, 32, says she spent 24 minutes on the phone with a 911 operator after discovering Isabella wasn't breathing, all because the dispatcher kept telling her she had the wrong address. "“She kept saying, ‘Ma’am, that’s a bad address’ and I’m like, ‘No, it’s not a bad address it’s 450 East 169th Street apartment 6C,” Knight told 1010 WINS. “She was saying ‘459;’ It sounded like she said ‘East 179th Street.'”

The dispatcher, who also attempted to instruct Knight in administering CPR, is reportedly an NYPD civilian employee. According to the Post, she has been reassigned pending an investigation into Isabella's death. "She could have been saved if they would have gotten to us in time," Knight said, telling reporters, "I feel like she needs to lose everything because she kept arguing with me."

The 911 system has been harshly criticized, with reports saying the system is overloaded, while operators are undertrained and "burned out," despite a recent $2 billion overhaul. And Knight isn't the first parent to accuse dispatchers of fatally bungling a call—in 2010, responders were directed to the wrong borough after a child suffered cardiac arrest, and in 2013, a 911 operator didn't see an ambulance request for four minutes after 4-year-old Ariel Russo was fatally struck by a driver on the Upper West Side. The de Blasio administration recently launched an investigation into the aforementioned overhaul, finding it rife with glitches.