A man charged with murdering two teenagers last year during a dispute over a T-shirt has pleaded guilty. Mario Cervantes-Angel, 29, pleaded guilty Tuesday to two counts of first-degree felony aggravated murder for the July 6, 2016 shooting deaths of 15-year-old Abril Izazaga and her brother, 16-year-old Jose Izazaga, outside of a Salt Lake County apartment complex. The charges carried the potential for the death penalty.