Petrol prices would be held unchanged, a text message from the firm said.
Last Saturday Sri Lanka's state-run Ceylon Petroleum Corporation jacked up standard diesel by 30 rupees to 110 rupees a litre and petrol to 157 a litre, despite petrol being a cheaper commodity worldwide.
The increase came days after the Lanka IOC raised diesel prices by 20 rupees.
Today's increase puts diesel from Lanka IOC at 130 rupees a litre. The firm has about a quarter of the fuel retail market in Sri Lanka.
When Lanka IOC raises prices unilaterally, customers flock to CPC increasing the losses of the utility.
Global commodities have been rising at record levels in 2007 after the US Federal Reserve and other reserve currency central banks went on a money printing spree following a collapse in credit markets.
The Federal Reserve has now halted its rai