A Missouri man who has spent more than 30 years in prison was released Tuesday after a judge overturned his murder conviction.

Christopher Dunn has long maintained that he was not involved in the killing of 15-year-old Ricco Rogers, who was fatally shot on May 18, 1990, while he was sitting on a porch at a home.

In July, St. Louis City Judge Jason Sengheiser ruled in favor of vacating his conviction, stating that Circuit Attorney Gabe Gore “has made a clear and convincing showing of…