PENNS GROVE — The South Jersey mom accused of stabbing her baby to death admitted to the killing and said she did it "to fulfill the last of her sins: murder."

The disturbing new details are being revealed by investigators in court documents as prosecutors seek to keep Kristhie Alcazar, 26, jailed until her trial. is detailing the contents of the court documents, which describe the scene when police first arrived at Alcazar's Penns Grove home and her interviews with police.

The horrific case has rocked the Penns Grove community as local residents try to come to grips with the killing of an infant. They have created a makeshift memorial on the front porch of the home where the killing happened.

One neighbor told ABC 6 Alcazar was a "nice lady." Another said he has lived next door for more than two years and was "shocked."

Prosecutors have charged Alcazar with murder.

She remains jailed in Salem County. A judge has scheduled a detention hearing for Thursday and will likely order her jailed until her trial. A trial date has not been set.

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