New York

At Tuesday's arraignment, assistant district attorney Justin McNabney revealed new details of the case, including how an intensive NYPD canvass for surveillance footage led to the identification of Pazienza as a suspect.

The fatal attack occurred at the corner of West 28th Street and Eighth Avenue, and prosecutors say that video shows Pazienza wandering in the area for about 20 minutes after the assault.

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Then, about half an hour after the attack, Pazienza and her fiancé were seen entering Penn Station, where they each swiped a MetroCard belonging to Pereira.

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The painstaking search through surveillance video revealed extremely clear images of the alleged attacker, which the NYPD released to the public on Saturday, leading to an anonymous tip that Pazienza committed the crime and was hiding out at her parents' house on Long Island.