the fight originated by nunes ramos e silva , 21 , a . k . a . " gilson aritana , " a member of the ada ( " amigos do bairro " ) gang organised other men into the " morro da mineira " ( quarry mountain ) to buy drugs , luis teixeira dias , a local police official said . the area is controlled by neighboring gang comando vermelho ( red command ) , which does not agree of other gangs selling goods in the region . comando vermelho members start attacking the rival gangs of ada to protect their turf .
Ramos da Silva killed 11 people.