Sofia - Bulgarian customs seized 20 kilogrammes of heroin in a car crossing the border from Turkey and detained a Dutch driver, the customs agency said on Tuesday.

The drug was hidden in a car travelling from Turkey to the Netherlands through the southeastern border checkpoint at Kapitan Andreevo, the agency said in a statement. A 39-year-old Dutch national was arrested.

Bulgaria lies on the main international drug-trafficking route between Turkey and Western Europe. Heroin seizures in Bulgaria doubled in 2007 to 977 kilogrammes, according to customs data.