The five persons aboard a small sub that was attempting to explore the wreckage of the Titanic reportedly perished when their vessel imploded.

U.S. Coast Guard Read Admiral John Mauger stated... The Titan was reported missing on Sunday, but it isn't clear when the implosion happened... CBS News Correspondent Roxana Saberi reported...

A Canadian search crew found the tail cone of the sub along with other debris. Again, that tail cone was about 1,600 feet from the resting place of the Titanic on the floor of the North Atlantic near Newfoundland. 

More details from WGNS' network affiliation, CBS NEWS (See Below Video):