New details in the investigation of the disappearance of Malaysian Airlines Flight 370.
The plane soared near its peak altitude after drastically changing course, a Malaysian aviation source said. Also, investigators never got a signal from devices on the plane that should have been triggered if the plane crashed or hit the water.
Nic Robertson has more.
The Bluefin has certainly had its share of challenges in its search for Flight 370. Its first two dives were cut short due to technical problems. So far, there has been no sign of the missing jet.
There are questions as to whether the Bluefin-21 can dive deep enough, and whether it can send back pictures that are clear enough.
So is there anything out there that can do the job better?
Rosa Flores has the story.
A desperate race is under way off the coast of South Korea to save nearly 300 people, most of them students trapped in what authorities hope are isolated air pockets inside the overturned ferry.
Authorities are working on the assumption that survivors are still in the ship - but bad weather, murky water and darkness have hindered the rescue operation.
On land, the South Korean government is under increasing pressure to determine what caused the crash that has killed at least 25 people.
Officials say it appears the ship may have veered off course, though they say it does not appear to have hit a rock.
The captain of the ship, meanwhile, is under investigation.
Kyung Lah is OutFront in Jindo, South Korea with the latest in the investigation.
Officials tell CNN there are new questions about Malaysia Airlines Flight 370's co-pilot's mobile phone.
His phone could be key in the investigation into the aircraft's disappearance
The Malaysian government is investigating whether his phone connected with other towers along the flight path - and why only the co-pilot's phone was detected.
How significant is this development? Is it just a coincidence or was something suspicious going on in that cockpit?
Watch Richard Quest and CNN aviation analyst Arthur Rosenberg's fiery debate over the latest developments in the investigation of missing Flight 370.
As an underwater drone hunts along the bottom of the Indian Ocean for Flight 370, the search above water is under way, with 14 planes heading to the search area. This comes as Australia's top investigator says the aerial search is expected to end any day.
It's the latest discouraging news for the families of the plane's passengers, including Sarah Bajc, who's partner Philip Wood was a passenger on Flight 370. She is OutFront.