A car bombing in the Spanish island of Majorca has killed two Civil Guard officers and led to ports and airports being shut for a time, BBC reported.

Thousands of tourists were affected as some flights were turned back or diverted to other Spanish islands.

Spain said the blockade was meant to "prevent the terrorists from fleeing". Police said a second unexploded device was found near the explosion site.

The blast comes a day after a similar attack in northern Spain injured 46.

The government has blamed both on the Basque separatist group Eta.

Spanish Prime Minister Jose Luis Rodriguez Zapatero described the killings as "vile" and paid tribute to the Civil Guards.

He said the killers would be caught.

"They will not be able to escape, they will not be able to evade justice," he said.

A spokeswoman for the Civil Guards said that the two officers killed in Thursday's attack had been inside a patrol car parked outside the El Foc barracks in Palmanova when the bomb exploded, just before 1400 (1200 GMT).

Several other people were also said to have been injured by the blast, which happened in a busy area where there is also a post office and health centre.

Police said a second device was found under a civil guard vehicle at another nearby barracks.

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