AP TELEVISION

1. Wide of conference room in Beijing filled with relatives of passengers on missing plane

2. Close-up screen showing CCTV news feed with live briefing by Malaysia prime minister, Najib Razak

3. Various of relatives watching

4. Three relatives seated, one texting on mobile phone

5. Close-up of hands texting on mobile phone

6. Pan of conference room

7. Officials attending live broadcast

8. SOUNDBITE (English) Hugh Dunleavy, Malaysia Airlines Commercial Director:

"Because the situation is now starting to look at a criminal investigation, under international law, we are not permitted to respond to any questions at this time."

9. Close-up of woman speaking on phone

10. Zoom out as Dunleavy finishes speaking

11. Relatives speaking to each other

12. Various of relatives expressing their anger and frustration as Dunleavy and other officials leave room

13. Relatives leaving

14. SOUNDBITE (Mandarin) Mr. Wen (no first name available), father of MH370 passenger:

"It seems like a transaction. You guys are doing a business transaction. That is fine. But you shouldn't take our relatives as tokens. Please return our family members. Then you can do any transaction that you want."

15. Relatives leaving room

16. SOUNDBITE (Mandarin) Relative (no name available), daughter of MH370 passenger:

"I feel the Malaysian government is hiding something from us. The emotions of the relatives are on a roller-coaster now, up and down. We don't know who we can trust and what we should do. We feel very helpless and frustrated."

17. Wide of relatives seated outside room, looking distressed

18. Close up of woman

19. Wide of distraught relatives

Relatives of Chinese passengers travelling on the missing Malaysian passenger jet on Saturday reacted with anger and frustration to a statement by Malaysia's prime minister that the latest findings suggested flight MH370 had its communications deliberately disabled.

After watching Najib Razak's news conference on a big screen in a Beijing conference room, the relatives had many questions and concerns they wanted to discuss with airline officials who watched the briefing with them.

Malaysia Airlines Commercial Director Hugh Dunleavy, said he was "not permitted to respond to any questions", because the situation was starting to looking like a "criminal investigation".

However his response left some of the relatives furious and frustrated, as they accused both the airline and Malaysia's government of hiding the truth from them.

Razak said the plane's last signal came about seven and a half hours after takeoff, meaning it could have ended up as far as Kazakhstan or deep in the southern Indian Ocean.

Najib's statement confirmed days of mounting speculation that the disappearance of the Malaysia Airlines Boeing 777 with 239 people on board was not accidental, and underlined the massive task for searchers who already been scouring vast areas of ocean.

Najib said that searching in the South China Sea, where the plane first lost contact with air traffic controllers, would end.

The search involves 14 countries, 43 ships and 58 aircraft.