China says its citizens didn't hijack Malaysia Airlines Flight 370

(CNN)-- China says it has found no evidence that any of its citizens on board Malaysia Airlines' missing Flight 370 were involved in hijacking or terrorism. Background checks on all passengers from the Chinese mainland on the plane has found nothing to support such suspicions, Huang Huikang, the Chinese ambassador to Malaysia, said Tuesday, according to the state-run Chinese news agency Xinhua. Authorities have said they are investigating all 239 peoplewho were on board the Boeing 777-200, which disappeared over Southeast Asia more than 10 days ago en route from Kuala Lumpur to Beijing. According to the airline, 154 of the 227 passengers on board the plane came from mainland China or Hong Kong. Malaysia says the evidence gathered so far suggests the plane was deliberately flown off course, turning west and traveling back over the Malay Peninsula and out into the Indian Ocean. But they so far don't know who was at the controls or why whoever it was took the plane far away from its original destination. They're also not sure where it ended up, saying its last known location detected by a satellite is somewhere along two wide arcs, one stretching north over Asia and the other south into the Indian Ocean. The plane's last electronic connection with the satellite was about six hours after it last showed up on Malaysian military radar.