The U.S. Coast Guard announced Sunday it has launched an investigation into last weeks loss of the Titan submersible, which imploded on a passenger trip to view the wreckage of the Titanic at the bottom of the Atlantic Ocean.

The Coast Guard said its convened a Marine Board of Investigation the agencys highest level of investigation to look into what happened. The probe will seek to determine the exact cause of death of the five submersible passengers and whether anyone committed an act of misconduct, incompetence, negligence, unskillfulness, or willful violation of law that contributed to their deaths.

The probe will also look into whether there is a need for new laws or regulations, or amendment or repeal of existing laws or regulations, to prevent the recurrence of the casualty.

The Coast Guards investigation is being carried out in close coordination with the U.S. National Transportation Safety Board and its counterparts in Canada, France and the United Kingdom.