An Arizona substitute teacher is being investigated by police after he reportedly assaulted an eighth grade student.

The unidentified teacher and a 13-year-old boy were allegedly involved in a confrontation during a social studies class at Bernard Black Elementary School in Phoenix.

KSAZ reported:

The student said something to the teacher and appeared to push or bump him, that is when the teacher took him to the ground. Students recorded the incident on their cell phones. "I don't care what words come out of a child's mouth, no one should ever put their hands on a child like that," said the boy's mother Esther Delafuente. She found out her son was taken down by his teacher when she got a call from Bernard Black Elementary. They told her they called police to report the incident. Delafuente's son did not want to talk on camera, but he did admit he called the teacher a racial slur before the take down. "He's 13, and 13-year-old kids don't make good decisions sometimes, but an adult that is 6'5", a teacher that is big and stocky standing over a child who is chest bumping him," said Delafuente.

The substitute teacher has been removed from the school, pending the outcome of the investigation by police.

"We take very seriously the safety and security of our students," a statement from the Roosevelt School District reads. "We are working and cooperating with the on-going investigation that the Phoenix Police Department is conducting."

Delafuente said that she wants to press charges and have the teacher arrested.

Watch the video above.

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