(CNN)- Two U.S. officials tell ABC News that the two communications systems on Malaysia Airlines Flight 370 were shut down separately.
A source tells ABC that indicates the plane was not taken down by a catastrophic failure, meaning it could very well have been a deliberate act.
The two communications systems are the data reporting system, which they believe was shut down at 1:07am, and the transponder, which transmits location and altitude, was shut down at 1:21 am.
"This had to have been some sort of a deliberate act," aviation analyst for ABC's World News John Nance told CNN's Erin Burnett, adding that it's "likely a human-being was pulling circuit breakers at a sequential time."
This latest information comes on the heels of a senior U.S. officials telling CNN that the missing Malaysia Airlines plane may have flown for four to five hours after its last contact.
Officials now believe the plane may have made it to the Indian Ocean - the complete opposite direction of where the search was headed Wednesday.
Malaysian authorities believe they have several "pings" of plane data that were transmitted to satellites in the four to five hours after the last transponder signal.
Authorities believe during that time the plane could have flown towards the Indian Ocean.
But like everything else in this mystery, no one is really sure.
The search area and flight path of Flight 370 is not clear. But what is certain -is the Air traffic controllers lost contact with the plane around 1:30 a.m.
Malaysian officials at first said the plane u-turned, flying for about another hour.
Chinese officials on Wednesday released satellite pictures showing what might have been plane debris. But no evidence of debris was found and that theory was dismissed.