A trial of eleven suspected Islamic extremists of South Asian origin suspected over an alleged plot to stage suicide attacks on Barcelona's subway system opened in Spain on Thursday.
Prosecutors said the cell of men from Pakistan and India acted on orders from the Pakistan Taliban. The motive is alleged to be the presence of Spanish troops in Afghanistan.
The trial is expected to last several weeks.
Police foiled the alleged plan in January 2008 with a series of raids in Spain's second largest city.