Spanish police have arrested at least 12 people in connection with last year's train bombings in Madrid.
About 150 police took part in the raids in the capital.
Four of those arrested were connected to Youssef Belhadj, the suspected spokesman for al-Qaeda in Europe, who was extradited to Spain from Belgium today.
Six of the suspects were Moroccan, three were Syrian, one was Egyptian, one Palestinian and one Algerian.
The March 11th, 2004, bombings on four commuter trains killed 191 people and wounded more than 1,500.
