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.

The owners of a sailboat and barge that collided in Biscayne Bay on Monday, killing two young girls and critically injuring two other girls, are working with commercial salvage to draft a plan to have both vessels removed, according to the U.S. Coast Guard.

Two girls were killed and two others were critically injured in a collision between a barge and a youth club's sailing vessel Monday in South Florida's Biscayne Bay, authorities said