Sources said investigators believe the missing MH370 most likely went to the southern end of one of two "corridors" that include a vast area curving from west of Indonesia to west of Australia.
Director General of Lao PDR's Civil Aviation Department Yakua Lopangkao said there is no reason to suspect missing Malaysia Airlines Flight MH370 entered Lao airspace.
No passenger from Chinese mainland aboard the missing MH370 flight might be involved in hijack or terror attack, Chinese ambassador to Malaysia says.
Malaysian police are investigating a flight engineer who was among the passengers on the missing plane as they focus on the pilots and anyone else on board who had technical flying knowledge.
House of Catain Zaharie Ahmad Shah, the pilot of missing plane, is located in Laman Seri, a community in Kuala Lumpur's suburbs in Malaysia, where villas are worth millions of Malaysian ringgits.
China plans to send five more experts to Malaysia to help in the search operations while police are combing through the personal, political and religious backgrounds of pilots and crew of a missing plane.
The air traffic control authorities in the southern Indian city of Chennai facing the Bay of Bengal has joined search for missing Malaysia Airlines jet, said local media Sunday.
Latest information that someone deliberately disabled the transponder and changed the route of the missing Malaysia Airlines flight MH370 means the passengers could still be alive.
Police began searching the home of the pilot of the missing Malaysia Airlines flight on Saturday, after the country's prime minister confirmed the plane was suspected to have been deliberately diverted.
Analysis of electronic pulses picked up from a missing Malaysian airliner shows it could have run out of fuel and crashed into the Indian Ocean after it flew hundreds of miles off course.
Analysis of data by the US and Malaysian governments calculates MH370 likely crashed either in the Bay of Bengal or elsewhere in the Indian Ocean, according to CNN report.
Military radar-tracking evidence suggests the missing MH370 jet was deliberately flown across the Malay peninsula towards the Andaman Islands.