There's been a series of raids in Great Yarmouth and Lowestoft looking for counterfeit alcohol and tobacco.
Three shops in Yarmouth and two houses in Lowestoft have been targeted by the police, HMRC and trading standards.
Some 50 officers were involved in carrying out searches. A shop in Yarmouth's St Peter's Road was raided and hundreds of packets of cigarettes were discovered, hidden away in rooms behind.
Click below to watch a report from ITV News Anglia's Malcolm Robertson
Stephen Maunder from Norfolk Trading Standards said: "This undercuts legitimate businesses in our region and we're determined to stop it."
– Stephen Maunder, Norfolk Trading Standards
"In total we've found thousands of packets of cigarettes. No duty is being paid on this and often quite horrible chemicals and even rat droppings are found in the tobacco."