News site globoesporte reported that the incident occurred after Recife club Santa Cruz drew 1-1 with visitors Parana in a second division match.
There were clashes outside the Arruda stadium in Recife and fans reportedly ripped toilet bowls out and threw them at rivals on the streets below.
The death is the latest shock to Brazil in the run-up to this summer's World Cup.
The country is racing to get ready to host the tournament in June and July but preparations have been marred by delays, cost overruns, construction accidents and protests.
Daily shootouts and recent police slayings of two alleged drug traffickers rattled two of Rio de Janeiro's most prominent slums earlier this year, while at least 39 homicides were committed during a two-day police strike in and around the northeastern city of Salvador.
There have also been several fatal accidents during the construction of stadiums around the country.