"Spanish authorities intentionally withheld information and misled German officials into believing the Basque separatists ETA were responsible for the Madrid bombings, according to Germany's federal criminal bureau": DW-World DE (link)
“Spanish authorities intentionally withheld information and misled German officials into believing the Basque separatists ETA were responsible for the Madrid bombings, according to Germany’s federal criminal bureau”: DW-World DE (link)