A substitute teacher for the Jersey City Board of Education is accused of sexually assaulting a student over the last 15 months, Hudson County Prosecutor Esther Suarez announced Tuesday.

Elyse Castillo, 45, was arrested last week and charged with aggravated sexual assault, a first-degree crime, and other offenses related to her relationship with a student who was 13 and 14 years old at the time of the alleged crimes.

Suarez said the charges involve crimes that occurred between June 2018 and August 2019 inside Castillo’s Pavonia Avenue home in Jersey City. Castillo, a substitute teacher for the Jersey City Board of Education, last reported for work in November 2018, Suarez added.

A source with knowledge of the alleged crimes said Castillo met the student at Mahatma K. Gandhi School 23.

In a two-sentence statement, a spokeswoman for the Jersey City Public Schools said Castillo worked for the district as a substitute from October 2015 to November 2018. “We are saddened to learn of the charges.”

Meanwhile, Castillo also faces charges of endangering the welfare of a child, and other third- and fourth-degree offenses. Castillo will make her first court appearance on the charges Thursday. The Hudson County Prosecutor’s Office has filed a motion for her detention.

This story has been updated with new information.