A group of 911 calls released by authorities Wednesday paint a gruesome picture of the dying moments of Karen Bermudez-Rodriguez, an au pair, who was killed in a quiet Maplewood neighborhood.

In the 911 recordings, obtained through a records request, residents and neighbors all call to report the grisly scene outside their windows on Woodland Road, where Bermudez-Rodriguez, 26, was found lying on the pavement, covered in stab wounds.

One by one, sometimes breathlessly and in a panic, residents call for help to come.

"Please come immediately," one woman tells the operator. "Someone is dying."

"She’s on the street. Someone attacked her," the woman continued. "I just ran outside. I think she's bleeding to death. I think she may already be dead."

"Ambulance immediately," the woman said before hanging up the phone.

The recordings lend more details to an already-violent story, one of a scorned ex-boyfriend who refused to accept rejection and is now charged with two counts of murder.

At about 6 a.m. Saturday, police responded to calls of a wounded person. They found Bermudez-Rodriguez lying on the ground, with her hands bound by tape, covered with stab wounds, records show. Witnesses recounted hearing fighting and seeing a man assaulting Bermudez-Rodriguez. Video footage shows a man chasing her through the street where she collapsed, records show.

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Just hours earlier, between 1:30 and 2 a.m., Bermudez-Rodriguez had texted Joseph D. Porter to end their relationship and get back the keys she had given him to David Kimowitz's Walton Road home, where she lived and worked as a nanny.

Porter grew upset with her breakup attempt and drove to the residence.

When he arrived, Porter used the keys to get into the house, walked to the second floor, grabbed a knife and stabbed Kimowitz, records show. Kimowitz was pronounced dead at the scene. After stabbing Kimowitz, Porter bound Bermudez-Rodriguez's hands, but she broke free and ran outside, with Porter chasing her. Porter grabbed a different knife and ran her down, stabbing her in the street, records show.

Bermudez-Rodriguez had multiple stab wounds when officers found her. One man who called 911 said that the woman on the street had a cut on her neck.

"She's got a cut on her neck," he said. "It's very bad."

The recordings appear to be in the aftermath of the stabbings, as Bermudez-Rodriguez was in the street and Porter had run away, wearing a green shirt, according to the recordings.

"Quickly, send police at 3 Woodland Road," another man said. "Quickly. In the street there's a woman dying."

The man stayed on the phone with the operator as police and ambulance sped to the quiet Maplewood street. A woman's voice was heard in the background pleading for help, as the man tried to calm her down. The operator asked if the man was talking to the victim and he confirmed, while also giving a description of the attacker.

The man tried to stay talking to her, but Bermunez-Rodriguez was "almost out of it," he said.

"They're on their way," the man told Bermudez-Rodriguez, referring to police. "Do you know who did this to you?"

Email: torrejon@northjersey.com

Staff writer Keldy Ortiz contributed to this report.