Turkish security forces impounded 70 kg of heroin in an operation in Turkey's eastern province of Agri, the semi-official Anatolia news agency reported on Friday.
Acting on a tip off, the security forces stopped and searched a lorry at the border crossing which was on its way from Iran to Belgium via Turkey, according to the report.
During the search with the help of two sniffer dogs, they found 70 kg of heroin stashed in 60 packages and hidden in cache, said the report, adding the lorry's driver of Iranian descent was detained, Xinhua reported.
The Turkish security forces confiscated 16 kg of hashish in operations conducted throughout Turkey on Thursday.
Turkey is a key transit route for smuggling drugs from Asia and the Middle East to markets in western Europe.