Chinese relatives of passengers on a Malaysia Airlines flight missing between Kuala Lumpur and Beijing accused the airline of keeping them in the dark, while state media criticised the carrier's poor response.
Relatives were taken to a hotel near Beijing airport, put in a room and told to wait for information from the airline, but none came.
Malaysia Airlines said at least 152 of the 227 passengers on flight were Chinese."There's no one from the company here, we can't find a single person. They've just shut us in this room and told us to wait," said one man.
About 20 people stormed out of the room at one point, enraged they had been given no information.
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.