An amateur Mexican footballer is on the run after allegedly head-butting and inadvertently killing a referee who gave him a red card.
During his protestations, Vazquez head-butted referee Victor Trejo, who then fainted.
Paramedics on site tried to revive the victim to no avail, and the alleged perpetrator fled in a pick-up truck after seeing the ref had suffered serious injury.
According to emergency services on the scene, the referee died of a "widespread subarachnoid hematoma," caused by a blow to the head.
Police in Mexico are still on the lookout for the alleged killer.