Oil prices eased on Monday after the United Nations chief said top OPEC crude producer Saudi Arabia agreed to increase production and did not want to be blamed for the impact of soaring prices. New York's main oil futures contract, light sweet crude for July delivery, was 86 cents lower at 134.00 dollars a barrel. The contract closed at 134.86 after shedding 1.88 dollars on the New York Mercantile Exchange on Friday.Brent North Sea crude for August delivery was 61 cents lower at 134.50.Prices have soared since breaking through the 100-dollar level at the start of the year. They hit all-time highs of 139.12 in New York and 138.12 in London on June 6.