Her first international competition came at the 2008 World Junior Championships in Athletics, where she finished tenth in the shot put. Her first senior medals followed at the 2012 African Championships in Athletics, where she won the discus throw and was runner-up to Vivian Chukwuemeka in the shot put in a Nigerian medal sweep. Chukwuemeka was later disqualified for doping, however, elevating Okoro to double throws champion at the event.