Crude oil prices tumbled on Monday for the third straight day as a flight from risk amid fraud charges against Goldman Sachs pressured commodities and boosted the Dollar even as Europe's closed air space curbed jet fuel demand. Prices had meandered within a tight range for weeks before Friday's fraud charges against Goldman Sachs help send them down 2.7% in a day. That being said, while crude is down nearly 4% over the past week to their lowest levels since early March, prices are still 61% higher than a year ago.