Oil prices fall

World oil prices fell slightly in Asian trade Tuesday amid tensions in key crude producers Iran and Nigeria that offset concerns that US oil demand could decline amid economic uncertainty, traders said.
In afternoon trade, New York's main oil futures contract, light sweet crude for delivery in February, fell 12 cents to 94.08 dollars per barrel.
The contract closed up 1.51 dollars at 94.20 dollars on Monday.
London's Brent North Sea crude for February slid by seven cents to 92.85 dollars.