Spanish police on Saturday announced the arrest of three men they said ran the Spanish section of “one of the most influential neo-Nazi websites” in the world.

The arrests were in Barcelona, Tarragona and Saragossa, all in the northeast of the country, said a police statement.

The aim of the website is to “propagate antisemitic, homophobic and racist hate messages on the Internet among Spanish-speaking followers,” the statement added.

Police said they had tracked down to Switzerland “the leader and ideologue of this section, a Spanish citizen considered a leading international neo-Nazi, with a network of more than 50,000 subscribers.”

The suspects, aged from 21 to 23, had used false identities and servers based abroad to try to avoid detection, said the statement.

Spanish police collaborated with their Swiss counterparts and the European police agency Europol to track them down.