SINGAPORE, Oct. 28 -- A refrigerated lorry carrying a consignment of goods declared as assorted vegetables from Malaysia may have appeared routine, as the country is one of Singapore's main sources of imported produce.

But Immigration and Checkpoints Authority (ICA) officers at Woodlands Checkpoint had a different sort of discovery as they unwrapped white trash bags tucked under baskets of vegetables on October 8.

In a series of photographs posted on its social media on Tuesday (October 27), the authority said that their image analyst had noticed anomalies in the scanned images of a Malaysia-registered lorry.

The lorry was then directed for enhanced checks where ICA search and examination officers found more than 800 cartons of duty-un...