FROSTBURG, Md. (AP) — A Frostburg high school teacher is denying an allegation he had sexual contact with a 15-year-old female student.

The Cumberland Times-News reports that 43-year-old Bart Mazer pleaded not guilty Tuesday in Allegany County Circuit Court to the charge of third-degree sex offense. His trial is set for March 5.

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Mazer also is charged with fourth-degree sex offense involving a 17-year-old female student. He hasn’t entered a plea in that case, which is set for a hearing Dec. 12.

Police say both alleged victims were students at Mountain Ridge High School, where Mazer taught math in the fall of 2013.

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He is on leave from his job pending the outcome of the cases.

Information from: Cumberland (Md.) Times-News

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