Prosecutors unsure whether right man arrested in gang raid

One of roughly 30 people arrested in a gang sweep in Dorchester nearly two weeks ago may not have been the man authorities were looking for. A day after the raid, prosecutors asked for the immediate release of one of the defendants, O’Neil Taylor, because they were unsure whether he was the man they were looking for, a man known on the streets as Chew. Taylor, who has not been arraigned on any charges, was immediately released on supervised release and is due to appear in federal court in Boston Tuesday. He has protested that he is not Chew.