A federal judge in Brooklyn on Thursday disqualified two attorneys in an organized crime case in which a defendant is eligible for the death penalty, citing an unwaivable conflict of interest.

Eastern District Judge Nicholas G. Garaufis said he could not allow Richard W. Levitt and Nicholas G. Kaizer to represent the defendant, Gino Galestro, because they briefly represented an alleged associate of Galestro who will almost certainly testify against him at trial.