Four small bombs exploded at businesses in the troubled Basque region of northern Spain on Sunday injuring three people, state radio said, a day after the government proposed talks with ETA if it abandoned violence. Two Basque policemen and a security guard were wounded after one of the bombs damaged a deposit of highly toxic acid, creating a poisonous cloud. The three men were taken to hospital for treatment, the radio said. State radio attributed the attacks in the early hours of Sunday to ETA. Such tactics are typical of the armed separatist group's attempts to extort money from businesses in the Basque region as "Revolutionary Tax". A spokesman for the Ertzaintza Basque regional police force was not immediately available for comment, Reuters reported. Spain's ruling Socialist party announced on Saturday it would seek parliamentary support for a proposal to start talks with ETA if it abandons its weapons, prompting an outcry from the centre-right opposition Popular Party. ETA, ranked a terrorist group by the European Union, has killed more than 800 people since 1968 in a campaign for an independent Basque state carved from north Spain and southwest France.
