A New Jersey woman was arrested and charged with killing her identical twin sister in a Camden apartment, authorities said.

Amanda Ramirez, 27, was charged with aggravated manslaughter for the fatal stabbing of her sister Anna Ramirez at about 5:30 a.m. on Saturday in the Centennial Village Apartments, according to the Camden County Prosecutor’s Office.

Police said they received a call of an unconscious woman at the address and discovered Anna suffering from a stab wound.

The twin sister was taken to Cooper University Hospital where she was declared dead less than an hour later.

Her sister, Amanda, was later arrested and taken to the Camden County Correctional Facility.

Prosecutors announced Amanda’s arrest on Monday. She is awaiting a pretrial hearing to determine whether she will be allowed to post bond.