Fatawu Ibrahim was declared wanted after being captured on video wielding a gun during the clashes, which left two people with gunshot wounds.
His arrest follows weeks of a manhunt and public appeals by the police for information that could lead to his capture.
He is now in police custody and will be brought before the court in the coming days to face charges related to the violence.
The police, as part of their efforts to bring the suspect to justice, had earlier offered a GH₵ 20,000 reward for anyone with credible information leading to his arrest.