Two bombs explode in north Spain

Police in San Vicente de la Barquera combed the area for more bombs

Two small bombs have exploded in two coastal towns in northern Spain.

There are no reports of injuries in the blasts which took place at about 1300 (1100 GMT) in the resorts of San Vicente de la Barquera and Ribadesella.

Officials said the explosions followed telephone warnings from a caller claiming to represent the armed Basque separatist group, Eta.

Spanish authorities have warned that Eta, weakened by scores of arrests, could be planning a summer attack.

The group has not carried out a fatal attack for more than a year, Reuters reported.

Authorities briefly suspected Eta of involvement in the Madrid railway bombings in March, before blaming Islamic extremists.

Saturday's blasts took place in the northern province of Cantabria and in Ribadesella, in the neighbouring region of Asturias.

"All indications point to Eta: both the explosives used and the way in which the attacks were claimed," Cantabria's president, Miguel Angel Revilla, told Reuters.

For more than three decades Eta has waged a bloody campaign for independence for seven regions in northern Spain and south-west France claimed by Basque separatists.

The group is believed to have been weakened by raids and arrests in France and Spain in recent years.