The Trio is reported to be involved in coordinating the activities of the group in Spain.
Catching them simultaneously take place in three cities-Barcelona, Valencia and Malaga.
Anonymous claimed responsibility for the attack on the Sony, bank-the bank of Spain and organized action to defend the site secret Wikileaks spreaders.
A statement from the national police of Spain said a computer seized from the home of one of the arrested, used to be paved.
This arrest is the culmination of an investigation which started in October 2010. The investigation involves police cyberspace Spain to combing of millions of chat on the internet to be able to identify who is coordinating the activities of this group.
Some of the attacks launched by members of the Anonymous use web-based software named Loic to bombard sites target them with data.
Site Paypal, Mastercard, and Amazon are all being subjected to by using this tool.
It seems Loic not too good in hiding the data of its users. Many believe some police forces against members of the group making arrests based on this information.
The arrests have been made against members of the United States, United Kingdom of Anonymous and the Netherlands before the raids in Spain took place.
Anonymous image sharing sites from 4Chan and describes himself as a group of concerned citizens of the internet.
In addition to attacking sites that their members do not support Wikileaks.
Organizations that are not hierarchical and very loose was also attacked government websites in Tunisia and Egypt to help the people's protest movement.