CBS News Miami previously reported that Mila Yankelevich and Erin Ko (pictured on right) died in the crash. They were with Buchman (pictured on left), two other girls and a teen counselor on a sailboat as part of Miami Yacht Club's summer sailing camp when the crash happened.

The Coast Guard tested the tugboat captain, a barge crew member and the camp counselor for alcohol or drugs. None tested positive, the agency said.

On Tuesday, the sailboat involved in the fatal crash that killed two girls near Miami Beach was removed from the scene, along with the construction barge that collided with it. The U.S. Coast Guard confirmed Tuesday that alcohol and chemical testing had been completed and that results were pending.