A Phoenix police officer who resigned last year after being accused of assaulting a handcuffed inmate pleaded guilty to disorderly conduct and was sentenced to one day of probation for his role in the incident.

Jason A. Brooks also surrendered his certification with the Arizona Peace Officer Standards and Training Board as part of the plea agreement, ensuring Brooks' career as a police officer in Arizona is over.

Brooks, 26, resigned in September after he was confronted with the accusation that he struck a suspect several times in the chest while the suspect's arms were handcuffed behind his back.

Charges that the suspect, Ervin Nez Jr., had assaulted Brooks were dropped in the fall at the request of prosecutors.

Another Phoenix officer was the subject of an internal investigation for initially failing to report Brooks' actions against Nez. A disciplinary board recommended that officer be suspended, but the officer still has the right to appeal that decision.

The allegations against Brooks arose after security guards called him and another officer to a Phoenix apartment complex near 29th Street and Greenway Parkway after the guards reported Nez as a transient.

When the officers arrived, Nez used racial slurs against Brooks, who is Black.

Brooks told investigators that suspects had referred to him with racial slurs in the past and he took no offense, but he said Nez's comments angered him.

"Brooks explained to me that he usually does not let people get to him, but there has been other issues going on in his life and he said ... the subject, 'just kind of set me off a little bit,' " police records said.