A math teacher in the southern Vietnamese province of Binh Duong has been sentenced to three years in prison for molesting a ninth-grade schoolgirl during a private tuition class at his home, with the victim covertly recording his lewd acts for proof using her smartphone.

Nguyen Van Duc, 59, stood his trial at the People’s Court in the province’s Thu Dau Mot City on Wednesday.

He was convicted of molesting an under 16 year old person and was put behind bars for three years.

According to the indictment, Duc used to teach math at a local school for the gifted.

He later became deputy director of a business unit under the provincial Department of Education and Training and had since only offered private tuition classes at his home.

In October 2018, C. a ninth-grade schoolgirl signed up for a class at Duc’s house as she prepared for the National High School Examination.

During a class in November the same year, Duc touched C.’s breast while she was taking notes of the lesson.

The girl resisted by pushing his hand away.

The teacher then went outside for a brief moment, thus C. decided to turn on the camera app on her smartphone and switch the camera mode to video recording.

As Duc returned, he continued groping her, this time putting his hand under her shirt. The act was recorded by the ‘hidden camera’ set up by C.

The girl later recalled the incident to her family members, who then reported it to police officers along with the video footage.

The schoolgirl claimed it was not the first time she had been molested by Duc.

At Wednesday’s trial, the teacher admitted to molesting her during the lesson in November 2018, but denied having inappropriate actions on any other day.

Duc added he had consumed alcohol prior to the incident and was unable to control his urge.

C. had stopped studying at Duc’s house following the incident.

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