CCTV images are thought to show the pilot and co-pilot going through security checks at Kuala Lumpur airport
BBC.com reports that Malaysia officials say they believe the co-pilot of missing flight MH370 spoke the last words to ground controllers before it vanished.
Investigators are looking into the possibility that the aircraft’s crew were involved in its disappearance.
The search for the plane has extended into two vast air corridors.
Twenty-six countries have been asked to help find the jet, which went missing over a week ago with 239 people on board.
Malaysia says the plane was intentionally diverted and could have flown on either a northern or southern arc from its last known position.
Ahmad Jauhari Yahy, chief executive of Malaysia Airlines, told a press conference on Monday that initial investigations had indicated that co-pilot Fariq Abdul Hamid had calmly said “all right, good night” shortly before the plane disappeared.
However it is not clear whether the last words came before or after one of the plane’s tracking devices was switched off. Officials believe the communications systems were deliberately disabled.
Police have searched the homes of Captain Zaharie Shah, 53, and Mr Hamid, 27. A flight simulator taken from the captain’s home was being reassembled and examined at police headquarters, officials said.
Investigators are also looking at passengers, engineers and other ground staff who may have had contact with the aircraft before take-off.
The plane left Kuala Lumpur for Beijing at 00:40 local time (16:40 GMT) on 8 March.
Officials say the sign-off to air traffic controllers came at 01:19 as it left Malaysian airspace.
The last transmission from the plane’s Aircraft and Communications Addressing and Reporting System (ACARS) was received at 01:07.
“We don’t know when the ACARS was switched off after that,” Mr Ahmad Jauhari said. “It was supposed to transmit 30 minutes from there, but that transmission did not come through.”
It disappeared off air traffic controllers’ screens at 01:21, when it was over the South China Sea.
Malaysia’s Prime Minister Najib Razak said on Saturday that satellite and radar evidence showed the plane had changed course and could have continued flying for a further seven hours.©Standard Gazette, 2021. Unauthorized use and/or duplication of this material without express and written permission from this site’s publisher is strictly prohibited. Excerpts and links may be used, provided that full and clear credit is given to Standard Gazette with appropriate and specific direction to the original content.