1.   The bomb is thought to have been planted by the Basque separatist group Eta.

2.   The kidnappers are believed to belong to the Basque terrorist group ETA.

3.   Also on Saturday, there were two more car bombs exploded by ETA, the Basque group campaigning for an independent homeland.

4.   But the government quickly blamed the attack on rebels of the Basque separatist group ETA.

5.   Concerned that ETA, the Basque separatist group, may try an attack, Spanish authorities have tightened border restrictions and are searching cars entering the city.

6.   Earlier this week the Madrid police rounded up a suspected six-member Basque group that was said to be planning attacks.

7.   French police arrested the chief of weapons and logistics of the Basque separatist group ETA on Tuesday at a farmhouse in southwest France, Spanish officials said.

8.   In Spain, a cease-fire announced by the Basque separatist group ETA set off a political earthquake.

9.   It apparently aimed to strike at the French sanctuary of the Basque separatist group ETA.

10.   It was the biggest show of muscle by the Popular Unity party since the Basque separatist group known as ETA killed a town councilman two weeks ago.