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
-LRB- CNN -RRB- -- 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