AVONDALE -- Avondale police arrested a high school teacher after he allegedly sexually assaulted a student.
The Avondale Police Department began an investigation in April after a 15-year-old student at Agua Fria High School told her mother that she had been sexually assaulted by one of her teachers.
According to Detective Reuben Gonzales with the Avondale Police Department, the student was interviewed and submitted to a medical examination.
Gonzales said police determined that Brian L. Willner, 35, was the suspect in this case. He is the school's special education director.
Police say Willner pulled the special-needs student out of class and forced her to have sex with him inside his office. He reportedly threatened to kill the teen's mom if she told anyone.
Police said the girl had cuts and bruises conducive with a sex assault. They also said Willner and the victim tested positive for the same STD.
Willner was arrested at his home in Litchfield Park on Monday afternoon. He is being booked for sexual assault and sexual abuse of a minor.
The investigation is ongoing.