LONDON (AP) -- Oil prices slipped Friday after OPEC lowered its demand forecast for this year and amid signs that U.S. crude oil inventories are growing.

The Organization of Petroleum Exporting Countries lowered its forecast Friday for global oil demand growth in 2006 by 110,000 barrels a day. OPEC, which cited lower consumption in the U.S. and Asia, said its prediction comes after signs of larger oil inventories in the U.S., along with higher demand in January and February.