1.   ...an undercover operation designed to catch drug smugglers.

2.   They caught five smugglers in the raid.

3.   What makes you think that the smugglers were never caught?

4.   Enforcing these laws can be trickier than catching drug smugglers.

5.   They will try to catch the smugglers before they leave the state.

6.   Though U.S. Customs examinations are designed primarily to catch smugglers of illicit drugs, much of what is confiscated on a daily basis is far less dramatic.

7.   To catch smugglers, Customs officials scrutinize passenger manifests of flights before arrival.

8.   Authorities were unable to catch the smuggler, who sped off towards the Turkish coast, police said.

9.   Even when smugglers are caught, getting convictions has been difficult in the legal chaos following the collapse of communism.

10.   It is the second time in one week that wildlife authorities in Perlis have caught snake smugglers.