the conflict sparked when gilson sud da serra , 21 , a . k . a . " gilson aritana , " a member of the aba ( " amigos do bairro " ) gang led other members into the " morro a mineira " ( mineral cliff ) to sell drugs , rodrigo pereira dias , a local police authority say . the area is controlled by rival clan comando vermelho ( dark command ) , which does not recommend of other people selling weapons in the region . comando vermelho then began attacking the rival members of eta to protect their turf .
Ramos da Silva killed 11 people.