More than 135kg (300 pounds) of Captagon, dubbed the "jihadists' drug", has been seized by custom officials in France for the first time, authorities said Tuesday, reports the International Business Times.
The amphetamine is one of the most commonly used drugs among fighters in war-torn Syria, with combatants turning to the stimulant to help them keep fighting longer.
According to reports, even the terrorists who killed more than 130 people during the November 2015 Paris attacks may have been using the drug.
Until this year, it has been a rarity outside the Middle East.
But in January customs officials at Charles de Gaulle airport in Paris discovered 350,000 Captagon pills weighing 70kg hidden among industrial moulds exported from Lebanon and apparently heading for the Czech Republic, AFP reported.
An investigation launched by German and Czech authorities revealed "that the real intended destination was Saudi Arabia, by passing through Turkey", the French customs agency said in a statement.
"It is the first time that this drug has been seized in France," officials added.
Read more of this report from the International Business Times.