the fight originated when gilson diaz da costa , 21 , a . c . a . " gilson aritana , " a member of the ada ( " amigos do bairro " ) have drove other members into the " morro a mineira " ( miner hill ) to sell drugs , ricardo teixeira dias , a provincial police official said . the region is controlled by rival gangs comando vermelho ( red division ) , which does not approve of other gangs selling cigarettes in the country . comando vermelho members began attacking the rival members of ada to preserve their turf .
Ramos da Silva killed 11 people.