Kazakhstan's Customs Service says officers have confiscated nearly 200 kilograms of heroin in a vehicle at the Kazakh-Kyrgyz border.
The heroin is estimated to have a street value of up to $190 million.
Officials said more than one suspect was arrested in connection with the heroin, but declined to give a precise number.
Officials said the heroin was discovered after the vehicle was stopped as it sought to cross the border on September 4.
According to the officials, the heroin was most likely manufactured in Afghanistan and was on its way to Europe via Kazakhstan and Russia.
Based on reporting by KazTAG and RIA Novosti