tells cnn that the intelligence community has now increased its focus on those in the cockpit. we also know the last communication from the cockpit. someone saying, all right, good night. it came after some of the plane's systems had been shut down. all of that leading investigators to take a closer look at the pilot and the co-pilot. today, searching both their homes. cnn's renee marsh has a complete timeline of what we know so far. >> reporter: takeoff from kuala lumpur 12:41 a.m. local time last saturday. flight 370 headed north along its planned route to beijing. but then two communications systems stopped working within minutes of each other. and investigators now believe someone almost surely turned them off. at 1:07 a.m. near the east coast of malaysia, the system known as akars stops transmitting information about the plane's operating condition. and that was before the last radio transmission, all right,