
An implosion that killed five crew onboard the Titan submersible is now the focus of investigations by agencies from four countries.
The sub was destroyed less than two hours into a dive to the Titanic shipwreck on 18 June, claiming the lives of OceanGate Expeditions CEO Stockton Rush, father and son Shahzada and Suleman Dawood, Hamish Harding, and Paul-Henri Nargeolet.