An "electronic ping" was picked up from the Malaysia Airlines flight by satellites after the plane lost contact with ground control, Reuters reports. Meanwhile, US officials have been given an "indication" the plane crashed into the Indian Ocean.
Authorities have identified a second man travelling on a stolen passport onboard the missing Malaysia Airlines flight as Delavar Seyed Mohammadreza.
The Iranian man on the left has already been named as Pouria Nour Mohammad Mehrdad, 19, who is "not likely to be a member of a terrorist group".
A mother has described her frustration as she waits for answers on the fate of her missing son who is on board the missing Malaysia plane.
Malaysia's military believes a jetliner missing for almost four days turned and flew hundreds of kilometres to the west.
The wife of a passenger travelling on the missing Malaysia Airlines flight has spoken of her struggle to cope as she waits for news.