March 16, 2014 -- Updated 0304 GMT (1104 HKT)
Kuala Lumpur, Malaysia (CNN) -- U.S. intelligence officials are leaning toward the theory that "those in the cockpit" -- the pilots of Malaysia Airlines Flight 370 -- were responsible for the mysterious disappearance of the commercial jetliner, a U.S. official with direct knowledge of the latest thinking told CNN on Saturday.