MONTVILLE TOWNSHIP, N.J. – A Bloomfield, New Jersey first grade teacher is facing a slew of felony charges after he allegedly had sexual contact with multiple students.

Jason Fennes, 39, faces three charges of first-degree aggravated sexual assault, eight charges of second degree sexual assault, and four counts of endangering the welfare of a child in the second degree in one case. He was also charged with the same offenses in a second case, reports.

“The charges were the result of allegations of abuse made by a former student with whom Fennes allegedly engaged in a sexual relationship with when the victim was between the ages of 14 and 16,” according to the news report.

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“The acts allegedly began in 1997 when defendant was the victim’s assistant track coach at Butler High School and continued after he resigned from that position. The charges are based upon alleged sexual acts that occurred both while the defendant was in a supervisory position over the victim as well as when she was under the age of consent,” according to the website.

Four students have come forward with allegations of inappropriate contact with Fennes, with the alleged acts taking place in Parsippany, the news site reports.

No other details about the alleged crimes were released.

Fennes remains in the Morris County Correctional Facility in lieu of a $225,000 bail. He was booked on the first set of charges August 20, with the second set of charges coming August 22.

The cases are being handled by the Morris County Prosecutor’s Office and the Montville Police Department. The sexual abuse allegedly occurred between 2005 and 2009, while Fennes was employed as a first grade teacher at William Mason Elementary School in Montville, according to news reports.