Three more people have been arrested in connection with the bombings in Madrid which killed 190 people on 11 March.
Spanish officials say three Moroccans were arrested on Wednesday over the train blasts, which hurt 1,800 people.
That means that the number of people held over the attack is 16. It was the worst terror attack that has ever happened in Spain.
Authorities say one man was arrested in Madrid and two others were caught in Ugena, to the south of the capital.