Oil prices sank this evening, after tumbling close to a five-year low before the weekend, as weak energy demand and the global economic slowdown continued to affect the market.
US crude slid $1.31 to $41.05 a barrel, while Brent North Sea crude dipped $1.49 to $42.51.
Crude futures have collapsed since striking record high points above $147 a barrel in July, as a sharp global economic slowdown has slashed the world's demand for energy.
In a fresh sign of worldwide economic weakness, Japanese car giant Toyota forecast its first operating loss.
