Castro Urdiales, Spain - Two bombs on Wednesday targeted two booster stations near Spain's Basque region, following the election of a new Basque prime minister by the regional parliament on Tuesday, media reported.

The blasts in Castro Urdiales caused no injuries or significant damage, though a nearby school had to be evacuated.

Reports attributed the attacks against the television and mobile phone boosters to the militant Basque separatist group ETA, which had threatened the new Basque government.

A witness said he had seen a written warning by ETA near one of the stations.

ETA had threatened attacks coinciding with the taking office of Patxi Lopez, the first Basque prime minister to defend the region's unity with Spain.

Weakened by the constant arrests of its members, ETA killed four people in 2008, down from dozens annually in its heyday in the 1980s.

The group, which has killed a total of more than 820 people since 1968, is regarded as a terrorist organization by the European Union and the United States.