Four men were detained Tuesday after police found them transporting more than 200 old artillery shells toward Phnom Penh.
They were not trafficking the shells, police said, but planned to sell them as scrap.
Lt. Gen. Sok Phal, national police deputy chief for security, said police stopped the vehicle transporting the 105-mm and 130-mm shells on its way from kilometer No. 6 to the capital's Stung Meanchey district Tuesday.
The shells were dragged from river bottoms and were to be sold for scrap, Sok Phal said.
"The shells are not tied to anything," he said. "There is nothing to it."