27 June 2011 Last updated at 03:21 ET

Oil prices slide gathers pace on Greek worries

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Brent Crude Oil Futures $/barrel

Last Updated at 22 May 2013, 10:45 ET *Chart shows local time

price	change	%
102.95	- -0.96	- -0.92

Oil prices have extended their falls from the end of last week amid continuing concerns about the Greek debt crisis and the weak US recovery.

The International Energy Agency's decision to release emergency reserves last week has also depressed prices.

On Monday Brent crude for August delivery fell $2.95 to $102.72 a barrel, while US light, sweet crude dropped $1.13 cents to $90.14 a barrel.

The strengthening US dollar has also depressed prices.

Attention is now turning to economic data due out in the US on Friday.

The Institute for Supply Management is expected to report that factory activity slowed in June from May's level, which was already the slowest since September 2009.

"The market is trying to pre-empt Greece and worries in the West," said Jonathan Barratt from Commodity Broking Services in Sydney.

On Thursday the IEA announced that it was to release two million barrels of oil a day over 30 days, partly to replace lost production from Libya.

The Greek parliament is debating austerity measures on Monday, ahead of a crucial vote on Wednesday.