Greek authorities say they have arrested two heavily armed suspects near the border with Turkey.

A high-ranking security official, speaking to The Associated Press on condition of anonymity because he was not authorized to comment on an ongoing investigation, said the suspects were both Iraqi-born British subjects in their 20s.

The two were arrested Saturday night by coast guard officers near the port of the northeastern Greek city of Alexandroupolis. They were driving a trailer.

A coast guard spokesman also confirmed the arrests but would not provide further information.

The suspects were carrying more than a dozen guns and well over 20,000 bullets, the security official says. The two are not on any terrorist or criminal database.

Officials from police counterterrorism and the National Intelligence Agency are headed to Alexandroupolis.