The deaths occurred during a police raid to rescue officers who were being held hostage.
The latest raid was at an oil pumping station that was one of the targets attacked by police yesterday but which the Indians still controlled. Twenty-two police managed to escape, and the fate of a further seven remains unknown.
Yesterday's raid was primarily an attempt to clear a roadblock manned by more than 5000 protesters upset at the national government, which plans to allow resource companies to begin development in the Amazon region.
