BBC Online :
Spanish police say they have detained eight people on suspicion of recruiting militants to fight in Syria and Iraq.
They suspect the cell of trying to send jihadists to join the militant group ISIS – the Islamic State in Iraq and the Levant.
Raids were carried out in Madrid in the early hours of Monday, officials say.
The leader of the cell had been held at the US military prison at Guantanamo Bay in Cuba after being arrested in Afghanistan, a statement said.
Unconfirmed reports in Spanish media said one of the eight was from Spain, another from Argentina and the other six from Morocco.
The group leader was named by Spanish media as Lahcen Ikasrrien, who was held at Guantanamo Bay for several years but released on his return to Spain in 2005 for lack of evidence.
Police were also reported to be hunting the brother of one of the Madrid bombers. Attacks carried by Islamist militants on four trains in March 2004 left 191 people dead and another 1,800 people hurt.