[Fedora]

I'm fairly certain I've seen articles about ETA/Al Qaeda links. Here's one site which downplays such links but nonetheless includes the following interesting information:

Basque Fatherland and Liberty (ETA)

Does ETA have ties to al Qaeda?

No. ETA’s secular nationalist agenda has nothing to do with the Islamist fundamentalism of Osama bin Laden’s terrorist network, and there is no credible evidence of any systematic cooperation between ETA and al Qaeda, experts say. But Qaeda cells have been discovered in Spain. In November 2001, Spanish authorities arrested eight men suspected of being Qaeda operatives involved in the September 11 attacks. One of these men reportedly had past links with ETA’s unofficial political wing, Batasuna, which the Spanish Supreme Court banned in March 2003. In September 2003, Spanish judge Baltasar Garzon said the September 11 attacks were partially planned in Spain.

[Angelus Errare]

Al-Mufridoon means "one who isolates himself," though it can also be translated as separatist. Sounds to me like a fake name for al-Qaeda, similar to the "Islamic Army for the Liberation of Holy Places" that they used when bombing our embassies in 1998.

As for the al-Qaeda operative arrested in November 2001, he was Yousef Galan, the top lieutenant of Abu Dahdah (who was arrested with him and formerly served as the top al-Qaeda in Spain) who served as an election observer for Batasuna and attended numerous parties at the Iraqi embassy in Madrid even though he was well-known in Spanish Muslim circles as a radical Islamist who wanted to overthrow all of the secular regimes in the Middle East.

If Galan comes back under the radar again, his ties to the Iraqi embassy should also be investigated.