Madrid - Spain's Basque authorities have warned the regional police force that the militant Basque separatist group ETA may be planning an imminent large-scale attack against it, press reports said Thursday.

A part of ETA's Vizcaya complex, regarded as its most important structure, appears to have remained intact despite the arrests of 11 of its suspected members or collaborators, including its leader, last week, the Basque regional Interior Ministry wrote to the police force Ertzainza, instructing it to step up security.

ETA was thought to be planning an attack during some of the summer's regional festivities which draw large amounts of members of the public and police to protect them.

Madrid - A bomb exploded early Tuesday at the southern Spanish beach resort of Torremolinos on the Costa del Sol, with no injuries reported, police told local media.

The explosion at 12:20 am (2220 Monday GMT) was under a footbridge and near two hotels. There was no warning before the explosion.

Police have cordoned off the area and are investigating whether it was an attack by the Basque terrorist organization ETA.

A hotel employee told El Mundo newspaper that many hotel guests, primarily Spainards and British, were scared and reported seeing dark clouds of smoke.

Madrid- A bomb attack attributed to the Basque separatist group ETA in northern Spain damaged a construction company but there were no injuries, police said.

The explosion in the town of Orio, near the port city of San Sebastian, damaged some equipment sheds and several vehicles, police said.

The construction company is involved in building a motorway linking the industrial city of Bilbao and the French border.

Palma de Majorca, Spain - Venezuelan President Hugo Chavez arrived Friday on the Spanish holiday island of Majorca, where he was due to meet King Juan Carlos to normalize relations eight months after the monarch told him to shut up.

Chavez and Juan Carlos were scheduled to hold a one-hour meeting in the Marivent palace in the Majorca capital Palma, where the royal family is on holiday.

Canary Islands - A boat carrying about 60 would-be immigrants and a dead body Friday crossed over from Africa to the Spanish Canary Island of La Gomera, officials said.

Madrid - Spanish police have discovered an arms cache of the militant Basque separatist group ETA, police confirmed Thursday.

The cache, which was found near Ezcaray in the northern Rioja region following the dismantling of the most important ETA cell on Tuesday, contained an automatic rifle, tools for stealing cars and tranquillizers.

The discovery followed the arrests of nine suspects associated with ETAs so-called Vizcaya complex, including its leader Arkaitz Goikoetxea, on Tuesday.

The cell was planning a large-scale car bombing before the end of the month in the Basque locality of Getxo, where one of the detainees lived and where ETA has staged several attacks, press reports said.