Spain's intelligence service is "99 per cent certain" that radical Muslims and not the Basque separatist group ETA are responsible for the train bombings that killed 200 people, a Spanish radio station reported today.
Private radio SER, whose owners have links to the opposition Socialist Party, said the National Intelligence Centre (CNI) believes the evidence points to an Islamic group, and that 10 to 15 people left bombs on the trains and fled, the radio said.
ETA is still the prime suspect in the bombing investigation, and there is no new evidence of al Qaeda involvement, Interior Minister Angel Acebes said earlier.
Both possibilities were still being considered however, in the "progressing" inquiries, he added at a news conference.