(CNN) - The United States is asking Malaysia for more transparency in the search for missing Malaysia Airlines flight 370.
Defense Secretary Chuck Hagel called Malaysian Minister of Defense Monday night and encouraged his government to share what they know, as soon as they know it.
So far the investigation has been full of Malaysian authorities withholding key information, or releasing it, denying it and creating mass confusion.
What we do know about the missing plane?
The disappearance may have been carefully planned. CNN learned Tuesday that the sharp left turn that the plane made was programmed into the plane's software.
A law enforcement official tells CNN that the first key turn off the plane's scheduled route was almost certainly programmed by somebody in the cockpit.
Who was that "somebody"?
U.S. officials, citing Malaysian authorities, say an initial search of personal computers and email traffic from the 53-year old pilot and 27-year old co-pilot of the missing plane found nothing to indicate they planned the route change.
And U.S. officials have now reviewed cockpit conversations between the missing plane and air traffic controllers and say they heard nothing suspicious in those communications either.
As for the search for the plane itself, the total area now being searched stands at 2.97 million square miles - an area nearly the size of the entire continental United States.
New evidence supporting plane's altered course
Also today, the Thai military said it was receiving normal data from the missing plane until 1:22 am when it disappeared from its radar.
Six minutes later, the Thai military detected another signal - possibly the missing plane - heading in the opposite direction.
The data is the second radar evidence to show the plane did indeed turn off its scheduled route.
Kyung Lah is in Kuala Lumpur where she spoke with an old friend of the missing plane's pilot - a man who also flew the very same plane that is missing.
Retired Malaysia Airlines pilot Captain Nik Huzlan tells Lah he believes it wasn't pilot interference or mechanical failure - it was "some form of unlawful human interference."