By CBSNewYork Team

WHITE PLAINS, N.Y. (CBSNewYork)Westchester County officially has a new district attorney.

Democrat Mimi Rocah asked her mentor, former U.S. Attorney Preet Bharara, to administer the oath Monday morning in White Plains.

Rocah said during a challenging time, there’s a unique opportunity to pursue reform of the criminal justice system, and that will be her focus.

The new DA spent more than a decade as a federal prosecutor.

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