The operation, which is led by the Guardia Civil, has so far seen the arrest of some 20 people.
The Spanish Guardia Civil has been carrying out raids across the country against child pornography this, Monday, morning.
The operation remains open and has seen house searches in Madrid, Barcelona, Tarragona, Galicia, Aragón, Andalucía and Valencia, among others.
The Guardia Civil has been helped by the Catalan regional police, Los Mossos d’Esquadra in Barcelona.
First reports indicate that around 20 people have been arrested. They are accused of using web pages and internet forums to exchange pornographic images of children and to share their experiences. 278 people have been arrested in Spain this year in connection with child pornography.