Brazilian media has reported that a fan was killed Friday night after being struck by a toilet bowl hurled in clashes following a second division game.
The game, just 40 days before Brazil hosts the World Cup, took place in the city of Recife where the United States play their third World Cup game.
Home side Santa Cruz had drawn with visiting Parana in Brasiliero B when violence erupted outside the ground, Globo's web portal G1 reported.
The paper has named the victim as Paulo Ricardo Gomes da Silva. Police said he was taking cell phone pictures when the bowl killed him. Those pictures are now being reviewed by the police as part of their investigation.
Fans clashed outside the Arruda stadium, ripping out toilet bowls and throwing them at fans congregated below, fatally injuring one, a police spokesman said. Globo added three more fans were injured, one seriously.
The seriously injured was named as Vanderson Wilderlan Gomes.