Spain's Interior Ministry announced the seizure of 20,000 military-style uniforms being sent to fighters from "ISIS" and the Nusra Front.
The ministry said that police conducted a counterterrorism operation last month in the port cities of Valencia and Algeciras, where officers opened three shipping containers.
Authorities found the uniforms and other military accessories.
A ministry statement released Thursday said that police arrested seven people on suspicion of providing logistical and financial support to "ISIS" and the Nusra Front, al-Qaeda's branch in Syria.
The police operation "neutralized a very active and efficient business network whose primary purpose was to supply, maintain and strengthen" "ISIS", according to the statement.
The uniforms were declared as "secondhand clothing" in a bid to avoid raising suspicion while passing through customs.
Source: News Agencies, Edited by website team