Urea fertiliser is usually used to boost the power of bombs.
Sayan Khiriphet, 45, was apparently taken by surprise when police landed at his doorstep in Phrommakhiri district. The raid was conducted in response to tipoffs that Sayan was involved in drug trade.
Though no illicit drugs were found at his home, Sayan faces charges for illegally possessing explosives and guns. The suspect claims the explosives were only used for the purpose of fishing.