Coast Guard releases audio communications made after barge - tour boat collision . The captain of a tug boat says his barge was responsible for hitting the duck boat . Investigators are still looking into the collision 's cause . Two people were killed in the collision .
Coast Guard releases audio communications made after barge-tour boat collision . The captain of a tug boat says his vessel was responsible for capsizing the duck boat . Investigators are still looking into the collision 's circumstances . Two people were killed in the incident .