Oil prices fell for the fourth day in a row this evening, as stock markets fell in volatile trade and the US dollar rose.
Worries about euro zone debt continued to affect the financial and commodities markets, overshadowing better than expected US jobs data for April.
US crude oil was down $1.96 at $75.15 a barrel, while London Brent dropped 72 cents to $79.11 a barrel.
The euro gave up gains against the dollar as fears persisted that Greece's debt crisis could spread to other euro zone countries. A stronger dollar makes oil more expensive for holders of other currencies, and usually dampens demand.
Oil prices have lost further ground from a 19-month high hit on Monday, following a plunge in global markets due mainly to concern over the Greek debt crisis.
