The incident occurred on Wednesday evening, while the boy had since been arrested by the police for interrogation.
The suspect, on returning from school, had a heated argument with his father, who had accused him of stealing some empty containers.
The boy reportedly hit his father on the head with broken concrete blocks and the man could not recover from the injury inflicted on him.
The man was reportedly rushed to a nearby hospital, where he died.
DSP Folashade Odoro, the Police Public Relations Officer (PPRO) in Osun, who spoke on behalf of the Commissioner of Police, Mrs Dorothy Gimba, confirmed the incident to newsmen in Osogbo on Friday.
Odoro said that the suspect was arrested by a team of police detectives attached to the Police 'B' Division in Ijamo, Ilesa, for murder, adding that the boy had made a confessional statement to the police.
The PPRO said that the police commissioner had since ordered a full-scale investigation into the incident, adding that the matter would later be referred to the court for prosecution.