Two youths from the radicalized branch of the abertzale left have been arrested, and their electronic agendas contained data on Civil Guards and other members of the State's security forces.
The two members of the violent group Jardun were arrested for their involvement with crimes related to terrorism.
The information from the diary, including the possible location of a weapons hideout, was in the hands of the Ertzaintza since September.
The youths were accompanied by an Irishman militant in a faction of the IRA terrorist group.
Jardun is an extremely dangerous faction that has starred in many episodes of street violence.
Connection with Irish terrorism and diary contents suggest a possible change in Jardun's strategy.
Unless political inheritors of ETA are demanded to condemn terrorism, culture of violence will be upheld.
Conclusion: The threat is serious and institutions must respond strongly.