SPANISH police were still unsure whether the Basque terrorist group ETA was planning more attacks on Majorca following its planting of at least three bombs.

Spanish police said today that they were investigating whether Basque separatist group ETA still has an active unit on Majorca after two small bombs exploded on the popular tourist island yesterday.

The leaders of Spain’s main political parties have paid tribute to two police officers killed in an explosion as security forces guarded against a fresh attack on the 50th anniversary of the founding of the armed Basque group Eta.

Spain's security forces were on maximum alert today for the 50th anniversary of the armed Basque group ETA, blamed for bombings that killed two police officers and injured scores of people this week.