Fourteen countries are involved in the search for Malaysia Airlines Flight 370 that disappeared just over a week ago with 239 people on board.
Malaysia's prime minister says the plane was deliberately diverted and the last confirmed signal from it came 7.5 hours after takeoff. That is more than five hours later than the previous time given.
On Saturday, police visited the homes of both the pilot and co-pilot. There's a renewed focus on the passengers and crew of the missing jetliner after Prime Minister Najib Razik confirmed that the plane's disappearance was not an accident.
For the first time, the Malaysian government says that wayward Flight 370 did not stray by chance.
"These movements are consistent with deliberate action by someone on the plane," Razik said.
ABC News has learned that U.S. authorities now suspect one or both of the pilots. Why? Well, the airplane executed sophisticated "tactical aviation maneuvers," apparently to evade radar and to keep passengers from making outside contact.
Whoever was at the controls knew what he was doing.
"They took it up to 45,000 feet," said ABC News aviation consultant John Nance. "The chilling possibility there is that it was for the purpose of killing the passengers."
And now we have a stunning new version of the jetliner's flight path. Just 26 minutes into its flight to Beijing, two separate communications systems were deliberately shut off, as ABC News first reported this week. Then, the jet did head back across Malaysia before disappearing from radar.
But now we know from a signal sent to a satellite automatically, that the jet changed course again -- either north or south -- and soared on for at least another six hours. A vast amount of land and water for search crews to cover.
"This is akin to finding the Titanic and being able to bring some stuff up," Nance said.
The latest revelations deepen the anguish and uncertainty for families of the missing passengers.
"We don't know who we can trust and what we should do," said one woman. "We feel very helpless and frustrated."
Searching for answers that, U.S. experts now say likely lie at the bottom of the Indian Ocean.
(ABC7 News contributed to this report)