Madrid: A bomb has exploded in a beachfront restaurant in the capital of the island of Mallorca, Spanish government officials said on Sunday.

The bomb exploded at Restaurante La Rigoletta in Palma de Mallorca after the restaurant was evacuated following a telephone call made in name of Basque seperatist group ETA, the website of Spanish Newspaper El Mundo reported.

There have been no reports of injuries yet, El Mundo cited the Mallorcan ambulance service as saying.

ETA has hit Mallorca this summer with a car bomb attack which killed two officers of Spain's civil guard, on July 30.

The separatists are held responsible for more than 800 deaths in the past 40 years in their campaign to carve out an independent Basque homeland in Northern Spain and Southern France.