Two Moroccan brothers were arrested in Gerona north-eastern Spain on suspicion of aiding the terrorist militia Islamic State, the Interior Ministry in Madrid reported Wednesday.
The two men, aged 33 and 22, were accused of financing activities for the extremist group, the first time in Spain concrete evidence was found of financing operations for the self-styled Islamic State out of Europe, the report said.
The suspects used false identities to transfer money to Islamic State's financial apparatus in Syria and Iraq. A third brother is said to have died fighting for Islamic State in the conflict region.
Spain's Interior Ministry stressed that it was vital to stop the flow of jihadist money as it would be used for terrorist attacks in Europe as well as in Syria and Iraq.
Following attacks in Tunisia, Kuwait and elsewhere last year, Spain raised its terrorism alert to its second highest level, and has increased its security measures at "critical infrastructure" such as airports, nuclear facilities, and railways.