A 12-year-old student at William B. Ogden Elementary School on the Near North Side suffered a sprained wrist this week in a physical altercation with a school employee, according to the Chicago Police Department.

The employee, Marvin Allen, was arrested and charged with aggravated battery of a child. He has been removed from the school pending an investigation, according to an email to parents from Acting Principal Rebecca Bancroft and two other administrators.

Chicago Public Schools’ payroll records list Allen as a student special services advocate and full-time employee at the school. Student special services advocates are responsible for working with at-risk children and connecting them and their families with social services, according to district job descriptions.

An email to parents Thursday night from school leaders said an incident had occurred earlier this week “that resulted in a “physical student injury.”

“While limited in what I can share, the incident took place earlier this week between a student and staff member off school grounds after dismissal,” read the message. “The employee involved has been removed from school while a CPS investigation by the Law Department takes place.”

District spokeswoman Emily Bolton confirmed that the employee had been removed pending a district investigation.

“Student safety is the district’s top priority and we immediately removed the employee from his position upon learning of a deeply concerning altercation that took place off of school grounds,” Bolton said.

The exact circumstances behind the incident are still unclear.

The altercation happened Monday morning outside the school’s Jenner Campus, which used to be Jenner Elementary School before Ogden and Jenner merged last year. The Jenner campus serves grades 5-8.

At recent Local School Council meetings, Bancroft, the acting principal, acknowledged a “fractured community” at the school in the aftermath of the merger, which joined two different schools — Ogden, a diverse school with a large white population and many middle-class families, and Jenner, a predominately black school where most students come from low-income households. At the January meeting, parents complained of student disciplinary problems at the Jenner campus. Jenner parents have also expressed concerns about inclusiveness at the school.

The school has also experienced leadership turnover. One of the principals who helped engineer the merger died last March after an illness. And in November, the district placed Ogden Principal Michael Beyer on leave after he was accused of falsifying attendance records.

The incident also comes on the heels of a video released in early February that shows a school police officer using a taser on a female Marshall High School student.