Police yesterday recovered a quantity of fuel marker concentrate at a fish plant at Ruimveldt, Greater Georgetown.
The concentrate was stolen during an armed robbery from the Guyana Energy Authority (GEA) on Quamina Street, Georgetown, recently.
Two men have been arrested and are in police custody assisting with the investigations.
On September 30 last, the GEA said the composition of fuel marker concentrate had been modified after gunmen stole tens of gallons of the substance the week before.