Spain detains 10 suspected militants

"An operation was launched against Islamic activists and several people were detained," a spokesman for Catalonia regional police said when contacted by telephone from the capital.

Judicial sources in Madrid said the suspects were arrested "for Islamic terrorism" and most were of Pakistani origin.

Sources familiar with the case said the arrests were not related to the March 11 attacks in Madrid that left nearly 200 people dead.

Twenty suspects, most of them Moroccans have been arrested in relations to those attacks.