Beijing, August 12 (Reuters) 11 according to foreign media reports, the Brazilian 11, local time, the police arrested two people, because they suspected of supporting extremist groups "islamic state" (IS) and planning in Rio implementation of a possible attack during the Olympics. Reported that the police in 11 of the 12 people have been arrested before taking action, they were allegedly IS armed with collusion. The Brazilian federal police, said three people released after questioning. 11...