( CNN ) -- A Dolton , Illinois , police officer assigned to a school was placed on administrative leave and later resigned after a surveillance video surfaced of him allegedly assaulting a special-needs student , officials said . Videotape allegedly shows an unidentified police officer assaulting student Marshawn Pitts , 15 . Ed Manzke , an attorney who represents the student , Marshawn Pitts , 15 , told CNN Wednesday the officer beat Pitts for not adhering to the school 's dress code . The incident occurred in May at the Academy for Learning , a Dolton high school for special-needs students . Pitts was admitted to the school in May after moving from Iowa , Manzke said . He suffered brain injuries as a child when he was hit by a car . The police officer , who has not been identified , reprimanded Pitts for not tucking in his shirt as school dress code and policy requires . A video , released to Pitts ' parents by the school several weeks after the incident , showed Pitts talking to the officer and a faculty member grabbing Pitts ' arm . Pitts pulls away and walks down the hall , with the officer and faculty member close behind . But the officer then slams him against the lockers and pins him on the floor -- breaking his nose , according to Manzke . Pitts was treated by a school nurse after the incident , then taken to the Dolton Police Department , where his mother picked him up , Manzke said . The officer was taken to a hospital and treated for an eye scratch , Manzke said . But , he said , the officer was never charged with anything and an explanation for the incident was never provided . In a written statement , Guy Lindsay , internal information officer for Dolton police , said the department was made aware of the incident and the tape on May 20 . After review of the tape , the officer was removed from the school and placed on administrative leave pending the outcome of the investigation , Lindsay said . While on administrative leave , the police officer returned to the department and voluntarily resigned , Lindsay said . The investigation continues , he said . In a statement obtained by CNN affiliate WGN , the Academy for Learning said it could not comment on an incident involving a specific student . But , the school said , `` Unfortunately , the physical restraint of a student sometimes becomes necessary . In such instances , AFL and its staff are committed to employing techniques that are safe , effective and which conform to best practice standards . `` Annually , a Behavioral Intervention Committee comprised of administrators , staff , union representatives and parents convenes to review restraint procedures . The AFL Behavior Management Team also participates in professional development and training regarding physical restraint on an annual basis . After a physical restraint occurs , the team meets to process , debrief and evaluate the incident and use of a physical restraint . AFL addresses the unauthorized or inappropriate use of a physical restraint , or improper techniques , as necessary , as an internal manner . '' Pitts ' parents are considering litigation against the city of Dolton , the school and Dolton police , Manzke said . He added he is in talks with Dolton police to settle the case . If those talks are not fruitful , Manzke said , a lawsuit could be filed within a few weeks . Pitts is now living with his father and attending another school , Manzke said . CNN 's Monica Trevino and Kara Devlin contributed to this report .
Officer beat student for not adhering to school 's dress code , says student 's lawyer . Incident at Academy for Learning , a Dolton high school for special-needs students . Student , Marshawn Pitts , 15 , suffered brain injuries as a child in car accident . Academy for Learning would not comment on incident involving a specific student .