Oil prices fell on Thursday but remained close to 70 usd in London owing to concerns about global supplies In London, the price of Brent North Sea crude for June delivery lost 33 cents to 69.53 usd per barrel in electronic dealing. The May contract expired on Wednesday New York's main contract, light sweet crude for delivery in May, dropped 34 cents to 68.28 usd per barrel Brent crude had Wednesday reached an all-time peak of 69.97 usdon news of falling US gasoline stockpiles, combined with heightened tensions over Iran Brent has been striking record high points since Monday on market concerns that the US might launch military strikes at uranium facilities in Iran, the world's fourth largest producer of crude The US Department of Energy, meanwhile, revealed Wednesday that gasoline or petrol inventories slumped by 3.9 mln barrels to 207.9 mln in the week to April 7 That contrasted with market expectations of a fall of just 2.1 mln barrels. Market watchers said the figures reinforced concerns about gasoline constraints heading into the peak-demand US summer holiday season, beginning late May, when many American drivers take to the roads on vacation Gasoline stockpiles in the US have been in decline for more than one month