PRAGUE, Nov. 27 (Xinhua) -- Czech customs officers have found about six kilograms of cocaine in a travel bag and detained a 25-year-old foreigner at the Vaclav Havel Airport in Prague, said customs spokeswoman Sarka Miskovska on Tuesday.

The man travelled from Rio de Janeiro via Lisbon to Prague. Customs officers uncovered the drug in a regular luggage check following an x-ray security screening.

Miskovska said the man's leather travel bag showed to be double bottom which aroused the suspicion of the customs officers. Subsequent drug test showed traces of cocaine. The drug along with the packaging weighed 6.4 kilograms. The total amount of the drug will be determined by a comprehensive analysis, said Miskovska.

This is the second case that Czech customs officers detected cocaine smuggled from Brazil. A 76-year-old Czech man who arrived in Prague from Sao Paulo, Brazil was detained recently for carrying 2.1 kilo of cocaine in his backpack.

According to the Czech National Drug Headquarters (NPC), the price of one gram of cocaine is around 2,000 crowns (approx. 87.8 U.S. dollars) on the Prague black market.