PITTSBURGH — A teenager testified she left a high school abruptly last year after a teacher identified her as the student who had accused another teacher of having an illegal sexual relationship with her.

The witness, now a 19-year-old college student, testified Thursday that she hadn’t told fellow students about her relationship with Plum High School teacher Joseph Ruggieri before the teacher on trial, Drew Zoldak, pointed her out in class.

Zoldak, who is suspended from the suburban Pittsburgh school, has denied knowingly trying to intimidate the student from testifying against Ruggieri.

Ruggieri pleaded guilty this year and was sentenced to two to five years in prison for institutional sexual assault.

The witness testified that Zoldak missed class one Friday in April 2015 and was asked why by a student the following Monday.

That’s when Zoldak told the class, “Men in suits from the DA’s office came to my home to interview me,” the witness testified Thursday.

When asked why, Zoldak “head-motioned backward and pointed at me and said, `Because of her,”’ she testified.