Audio of 'banging' sounds heard during search for Titanic submarine released

An audio clip of 'banging' sounds heard during the search for OceanGate's Titan submersible, which went for Titanic wreckage tour last year, has been released in upcoming documentary 'The Titan Sub Disaster: Minute by Minute'. The sound had given rise to false hopes that the five occupants of the submersible were alive. The vessel had imploded.