Mubasher: Oil prices saw a decline in early Tuesday's trading amid doubts over a satisfactory freeze agreement and concerns over higher US crude inventories on a weekly basis.
By 4:00am GMT, Brent crude futures were lower 14 cents, or 0.30%, to $45.81 per barrel.
The WTI crude edged down 25 cents, or 0.55%, to $43.62 a barrel.
This decline is a natural response to investors' concerns over freezing oil production, namely after the rating agency Fitch expected Asian rich oil countries like Kazakhstan to increase oil production to 79.5 and 86.5 million tons by 2017 and 2021, respectively, said commodity market analyst Ahmed Karm.
Investors are advised not to increase their buying positions until the general trend is determined after the OPEC meeting next week, Karm concluded.