A football referee in northern Brazil is decapitated by an angry mob after he fatally stabbed a player for refusing to leave the pitch. The BBC reports referee Otavio da Silva stabbed Josenir dos Santos during a June 30 match, after Santos challenged the referee and refused to leave the field after being sent off. The referee then pulled out a knife and repeatedly stabbed Santos, who died on his way to the hospital. The player’s friends and relatives stormed the field and stoned the referee to death before decapitating him. Police say one man has been arrested for the killing and investigations continue.