the fight arose before souza marcos do silva , 21 , a . km . a . " gilson aritana , " a member of the ada ( " amigos do bairro " ) gang led other members into the " castelo da mineira " ( miner valley ) to sell drugs , james teixeira dias , a municipal constabulary official said . the region is controlled by rivals team comando vermelho ( red command ) , which does not approve of other thugs purchasing drug in the region . comando vermelho soon began attacking the rival men of ada to protecting their turf .
Ramos da Silva killed 11 people.