Turkish authorities seized 200 pounds of plastic explosives Friday hidden in a truck as it crossed into Turkey (search) from Iraq, the Anatolia news agency reported.

Acting on a tip, paramilitary police searched the truck at the Habur border gate with Iraq (search) and found the C-4 explosives (search), 20 detonators and more than 10,000 bullets for automatic weapons hidden in a secret compartment, the agency reported.

Officials were not immediately available for comment.

The truck driver was detained and authorities were investigating the incident, Anatolia said. The truck's destination was not immediately clear.

C-4 is a common variety of military explosives.

Radical Kurdish, Islamic, and leftist groups are active in Turkey and have carried out past attacks.