Police in Spain's Basque region said a car bomb blast has killed one person.
News reports said the victim was a police officer killed Friday when a bomb attached to the underside of his car detonated as he started the engine.
A Basque police official could not confirm those details, saying only that the person inside the car died.
The official said the attack bore the hallmarks of the separatist group ETA.
The official spoke on condition of anonymity in line with departmental rules.