AKRON, Ohio — The Akron Police Department is conducting an internal use-of-force investigation after a school resource officer assigned to Akron Public Schools punched a Black student in the head multiple times.

Security footage from Firestone Community Learning Center shows the 16-year-old boy bypass metal detectors as he entered the school on Oct. 16, WKYC reports. The teen was directed to pass through the metal detectors several times before attempting to circumvent the SRO and another officer, both of whom are employed by Akron Police. Both officers then grappled with the student but were seemingly able to get his hands behind his back. That’s when the SRO punched the student in the head at least three times.

According to a police report written by the SRO, the school’s principal said over the radio that she was looking for the student because he had not gone through the metal detectors. The principal found the student and she and the SRO walked him back to the detectors. When the student walked through, it “glowed red and beeped,” the report says. The SRO said he then directed the student to go through the detector again but the student “did not immediately listen.”

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“After 25 seconds of fighting, I threw three punches toward the side of [the student’s[ head with my right hand and a closed fist,” the SRO wrote, citing concerns that the student had a weapon and that the fight could escalate with other students around.

No weapon was found on the student, Akron Mayor Shammas Malik said at a news conference last week. The police report says the student had a cell phone on him while he was going through the metal detectors. Students aren’t allowed to bring phones into the school and must store them in a pouch provided by the district.

The student was initially charged with resisting arrest, obstructing official business, and trespassing. The Summit County Prosecutor’s Office agreed to drop the charges without prejudice as the use-of-force investigation takes place. The SRO has been assigned to administrative duty and the other officer is on his regular patrol shift. The Akron Citizens’ Police Oversight Board will conduct an independent investigation once APD completes its internal investigation.