Guardia Civil officers have arrested two brothers in Legorreta, Guipúzcoa, on suspicion of being part of an ETA logistics unit responsible for distributing weapons and explosives within the organisation.
Police raids began in the early hours of Tuesday morning, ending with the detention of the two brothers whose surname is Aldasoro.
There have now been 35 arrests of suspected ETA terrorists since the beginning of this year. On January 10th 2011, ETA announced a ceasefire.