LIVE: CBS confirms, debris from Titan submersible indicates rapid and catastrophic implosion. The people on board are believed to be dead.

Debris from missing submarine found near Titanic wreckage; OceanGate believes crew 'have sadly been lost'

The U.S. Coast Guard said Thursday a remote operated vehicle (ROV) discovered a "debris field" near the Titanic wreckage site where a submersible went missing.