Spain: Car bomb kills one, injures four

MADRID, Spain (CNN) -- A car bomb explosion at a civil guard barracks in northern Spain killed a guard member and wounded four others Wednesday, a Basque regional police spokeswoman told CNN.

There was no immediate claim of responsibility, but authorities blamed the Basque separatist group ETA, said the spokeswoman.

No warning preceded the blast around 3 a.m. local time in Legutiano, a town in the Basque region of Spain, the spokeswoman said.

The wounded paramilitary guards included two men and two women.

Parliamentary leaders in Madrid were to meet later Wednesday to issue a statement of condemnation. Watch video from the blast scene »

"We want to make it clear to the ETA terrorist group that all of the democratic parties are closing ranks to finish off the ETA terrorist group. I express my condolences to the families of the victims," Jose Antonio Alonso, the Socialist majority leader in Parliament, told Spanish radio network SER.

The guardsman who died -- a 41-year-old married father -- was the sixth person to die as a result of ETA violence since the group ended a unilateral cease-fire with a bombing that killed two people at Madrid's airport in December 2006, according to authorities.

ETA is blamed for more than 800 deaths since beginning its fight for Basque independence in 1968. The U.S. and EU list ETA as a terrorist organization.