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INDIAN TRAIL, N.C. -- Authorities have filed another child sex charge against a teacher in Union County.

The Union County Sheriff's Office filed an additional count of indecent liberties with a student.

Authorities say the new charge involves the same student, and they've also determined that one of the incidents happened on the campus ofSun Valley High School, where 28-year-old Jessica Deck taught science.

A school resource officer received a tip about the incident, and then contacted the sheriff s office, prompting the investigation and initial charge.

Deck was initially arrested and charged last week.

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