MADRID, Spain (AP) - Three bombs exploded Thursday in the Basque region in suspected attacks by the separatist group ETA but no one was injured, officials said.
All three blasts targeted government buildings dealing with labor issues, and came on the May Day holiday, which marks the international day of the worker.
The Basque regional police said one of the bombs went off in Arrigorriaga near Bilbao and the other two in San Sebastian.
The police said no warning preceded the first bomb which was powerful and targeted a Labor Ministry building. The other two bomb explosions were preceded by a call from someone who claimed to represent ETA and identified where the bombs would explode before dawn.
The last two bombs were much smaller and exploded near a Basque regional government office housing the agency dealing with workplace safety, a Basque police official said. He spoke on condition of anonymity because of department rules barring him from giving his name.
ETA declared a cease-fire in March 2006 but ended it in December of that year after failing to win concessions in talks with the government.
The group has killed more than 800 people in its decades-old struggle to create an independent homeland in northern Spain and southwest France.
ETA's last fatal attack was the shooting of a former town councillor in the Basque region two days before a Spanish general election on March 9.