Investigators believe someone aboard a missing Malaysia Airlines Boeing 777 deliberately shut off its communications and tracking systems, turned the plane around and flew for nearly seven hours after it vanished, Prime Minister Najib Razak said Saturday.
Shortly after the prime minister finished speaking, police arrived at the home of the missing aircraft's pilot to search for evidence, a senior police official said.
As the unprecedented search for Flight MH370 and its 239 passengers and crew entered its second week, Najib told a news conference the hunt for wreckage around the scheduled flight path to the east of Malaysia was being called off.