Oil prices fell on Tuesday on estimates showing an increase in US crude inventories. Brent crude futures fell 9 cents, or 0.1%, to $77.11 a barrel, while US West Texas Intermediate crude lost 12 cents, or 0.2%, to $73.05 a barrel. According to market sources citing figures from the American Petroleum Institute, US crude inventories rose by about 347,000 barrels last week. Source: Qatar News Agency