Oil ministers are meeting in Vienna to discuss production levels
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Opec nations hold briefing after meeting on price fall

Crude oil prices have fallen to a four-year low as Opec nations meet in Vienna to discuss production levels.

A cut in production appears unlikely after Saudi Arabia, Kuwait, Qatar and the United Arab Emirates said they had reached a consensus on oil output.

Members of the Opec nations are holding a briefing following their discussions.

Some parts of this news briefing may not be in English