137 individuals have been arrested across the island for selling fuel at higher prices without a valid license.
Police said 27,000 litres of petrol, 22,000 litres of diesel, and 10,000 litres of kerosene oil were seized in 429 raids.
The raids were conducted following reports of individuals storing stocks of fuel illegally after purchasing through the filling stations and selling at higher rates.
The Police requested the public to lodge complaints of the illegal sale of fuel via 118, 119, or 1997.
Police Media Spokesman SSP Nihal Thalduwa said reports have been received of various components being mixed with the fuel.
SSP Thalduwa said Police intelligence units are conducting investigations in this regard.
He noted that the Police is working together with officers of the Ceylon Petroleum Corporation when conducting raids.
SSP Thalduwa urged the public to refrain from storing fuel illegally adding it also poses a risk to individuals as it is a dangerous substance.