Tail cone of the Titan sub discovered near bow of Titanic on the sea floor, US Coast Guard Rear Adm. John Mauger tells reporters.

"I hope this discovery provides some solace during this difficult time," says USCG Rear Adm. Mauger.

Debris consistent with a catastrophic loss of the pressure chamber, according to Rear Adm. Mauger.

Incredibly complex operating environment on the sea floor but ROV has been able to identify parts of the sub, says Rear Adm. Mauger.

Five different major pieces, including nose cone, front end bell of the pressure hull, aft of the hull, found, according to officials.