Customs officers arrested a lorry driver after finding 610,000 illicit cigarettes in his vehicle at Lok Ma Chau Control Point on July 15.
The haul was valued at $1.7 million with a duty potential of $1.2 million.
Officers inspected the lorry, declared to be carrying electronic parts, shoes and furniture, and found the cigarettes inside 25 mattresses.
The 39-year-old male driver was arrested and his lorry was seized.
Call 2545 6182 to report illicit cigarette activities.