A pal of tragic Titanic explorer Hamish Harding told the Briton he "shouldn’t get in that damn sub".
The revelation came as police in Canada refused to rule out a criminal investigation into the ill-fated expedition that saw five men - including three Brits - lose their lives.
The OceanGate 'Titan' submersible the tourists descended to the wreck of the Titanic in suffered a “catastrophic implosion” close to the sea bed killing all those onboard instantly.
