A D.C. high school teacher is accused of climbing through a student’s window at night to sexually abuse her on numerous occasions.

At least twice, the teacher used the 16-year-old student’s phone to record explicit videos of himself with the girl, the U.S. attorney’s office said.

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The abuse began last spring. The most recent incident happened last month.

FBI agents arrested 35-year-old John Gass at his Hyattsville, Maryland, home Thursday.

Gass taught at the D.C. International School. He has been fired.

Gass is charged with production of child pornography and enticement of a minor.

Detectives say there could be other victims. Anyone with information should call the FBI.

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