Crude oil prices hit a five-month low amid falling oil demand, as European countries announce lockdowns and restrictions to fight the second wave of the coronavirus.
International benchmark Brent crude was trading at $36.46 per barrel at 0654 GMT for a 1.86% decrease after closing Friday at $37.76 a barrel.
American benchmark West Texas Intermediate (WTI) was at $34.49 a barrel at the same time for a 3.63% decrease after ending the previous session at $35.79 per barrel.
The price slump was spurred by widening lockdown measures in European countries to prevent the spread of the coronavirus.
France, Germany, the UK, Belgium and Greece announced nationwide lockdowns and other countries, including Italy and Spain, brought strict restrictions to curb the coronavirus spread.
On Monday, market uncertainty prevails on the eve of the US presidential election to exert further pressure on oil prices.
Investor oversupply fears at a time of weak demand due to the global coronavirus pandemic are being further fueled with Libya's return as an oil exporter. Libya is now pumping more than 600,000 barrels per day and Iran could also follow suit if US Democrat candidate Joe Biden wins the presidential election.
By Sibel Morrow