News Link •
They were attempting to speak to Chinese journalists outside the daily press conference in Kuala Lumpur.
A BBC reporter was pushed away from the relatives, who were carrying banners criticising the handling of the case.
Teams from 26 countries are trying to find flight MH370, which went missing on 8 March with 239 people on board.
One of the relatives, a middle-aged woman, cried: "They give different messages every day! Where's the flight now? Find our relatives! Find the aircraft!"
The Malaysian government said later it regretted the scenes and ordered an investigation, saying "one can only imagine the anguish they are going through".
During the daily briefing, Malaysia's acting transport minister rejected reports that emerged on Tuesday that the plane had been spotted in the Maldives.