TUCSON, Ariz. – A Tucson special education teacher was arrested Wednesday and charged with having sexual contact with her 13-year-old son.

Christine Mazzarella, a 47-year-old teacher at Lineweaver Elementary School, was arrested by the Tucson Police Department, reports Tucson News Now.

She is facing four counts of sexual conduct with a minor.

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Investigators said that Mazzarella had sexual relations with her son on multiple occasions during July 2013, the story reports.

Parents with students at the same school as the special education teacher are understandably concerned.

“That’s incest. That’s not right for someone like that to be working at a school,” one school mom said. “What other kinds of things could they do?”

Mazarella is scheduled to appear in court again at the end of the month.

Another Tacoma area teacher arrested

Last week, we presented Meredith Powell, a 24-year-old Tacoma math teacher, who was arrested on allegations of child rape and communicating with a minor for immoral purposes.

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This week, we introduce Michael Allen, a 33-year-old biology teacher also from Tacoma, who was arrested Tuesday for allegedly having sexual relations with a student.

Allen, a teacher at Curtis High School, is facing five counts of sexual misconduct with minor, reports The Seattle Times.

According to court documents, a 17-year-old student became a teacher’s aide for Allen and got a hold of his cell phone number. The two began to frequently call and text one another, which led to them spending time together outside of school and, eventually, to sexual contact.

After the school received multiple reports from parents and students last month, Allen was placed on paid administrative leave and barred from any contact with the student. However, the two continued to see each other, reportedly having sex three more times.

On Tuesday, the school requested the girl’s phone records and discovered thousands of messages between the teacher and student after he was placed on leave.

Allen was arrested later that day and is set to go to trial in March.