The German authorities had informed the Commission earlier that they identified organic cucumbers from two provinces of Spain (Almeria and Malaga) as a potential source of the STEC toxin. They also suspected a batch of cucumbers originating in the Netherlands and traded in Germany, and this batch is still under investigation.
On June 1st, according to a news update from the BBC, German researchers are still trying to identify the source of the deadly E. coli outbreak after Spanish cucumbers were found not to have the lethal strain of E. coli.