The Spanish government said the six belong to an Algerian Islamic terrorist cell called the Salafist Group for Call and Combat.

CNN: Suspect instructed attack pilots, court hears

Police said the six formed an Algerian Islamic terrorist cell of the Salafist Group for Call and Combat, one of the 27 terror-related entities whose assets were frozen recently by the Bush administration.

CNN: Police: 2 Tunisians linked in plot against U.S. targets in Europe

Prosecutors also claim that they are members of an al-Qaeda-linked group, called the Salafist Group for Call and Combat, although it is not known if they are directly linked to Mr bin Laden.

ECONOMIST: The elusive al-Qaeda | The

Prominent international terrorist organizations such as al-Qaeda and Hezbollah have assumed a strong presence - primarily to finance and plan, but also to carry out, attacks - while several local terror groups such as al-Itihaad al-Islami and the Salafist Group for Call and Combat have emerged to wage jihad for control of Africa itself.

CENTERFORSECURITYPOLICY: Securing Africa