A footballer enraged by getting a red card in Argentina fetched a gun and fatally shot the referee on the pitch, Police said.
Cesar Flores, 48, was refereeing a match between local teams in the central city of Cordoba when he sent off a player for a foul.
The youth took a revolver from among his belongings, went back on the pitch and shot Flores several times on Tuesday.
The referee died later in hospital, the source said. The killer fled and was being hunted by police.
