MADRID, Spain (AP) _ An explosion killed a city councilor Thursday in the town of Viladecavalls in northeast Spain, state radio reported.

The radio report identified the victim as Francisco Cano and said he was a member of the ruling center-right Popular Party.

It was not immediately clear what kind of blast killed Cano, nor was it clear whether the explosion was an attack by the Basque separatist group ETA.

ETA has claimed responsibility for some 800 killings since 1968, when it began campaigning for an independent Basque state it believes should encompass parts of northern Spain and southwestern France. The group ended a 14-month unilateral cease-fire last December and since then has stepped up its attacks, killing 20 people so far this year _ its highest yearly toll in nearly a decade.

Leaders from the Popular Party have frequently been targeted by ETA attacks.

Viladecavalls is near the industrial city of Tarrasa, north of Barcelona in the Catalonia region.