Actually, the last paragraph of the linked wikipedia article mentions the organo-phosphate theory (it somewhat labels it as conspiracy-theory, but it mentions i

Actually, the last paragraph of the linked wikipedia article mentions the organo-phosphate theory (it somewhat labels it as conspiracy-theory, but it mentions it). The talk page actually mentions a kind of rebuttal to the organo-phosphate theory (which claims that the symptoms are not compatible with organo-phosphate poisoning): http://ije.oxfordjournals.org/cgi/reprint/33/3/443 http://ije.oxfordjournals.org/cgi/reprint/33/3/443 I can't really evaluate any of these claims since my expertise in this field is non-existant. Things might be as simple as described in the Guardian article (which portrays the organo-phosphate theory as self-evident but suppressed truth), or maybe more complicated. The forced resignation of all responsible researchers certainly smells very funny and the Spanish government seems to have tried to suppress the truth or at least give the impression that they were able to handle things by suppressing dissenting opinions.