Sinn Féin MEP Lynn Boylan has launched an initiative aimed at recruiting members of the European Parliament to attend and observe the court trial of Dublin activist Daniel Tatlow-Devally in Germany. The 32-year-old Irish citizen is currently standing trial in Stuttgart alongside four other activists following an alleged break-in at a defence electronics plant in Ulm in September 2025.

German prosecutors allege that the group caused approximately €1 million in damage to the facility, which is operated by a subsidiary of Israeli defence manufacturer Elbit Systems. The defendants—collectively referred to by campaign groups as the "Ulm 5"—face charges under Section 129 of Germany's criminal code relating to membership in a criminal organisation, alongside counts of trespass and criminal damage. All five defendants have denied wrongdoing, describing their actions as non-violent civil disobedience.

Boylan was among a cross-party delegation of Irish Oireachtas members who traveled to Germany in July to attend a court hearing and visit Tatlow-Devally in pre-trial detention. Following the visit, delegation members and Tatlow-Devally's family raised concerns over pre-trial conditions, citing 23-hour daily cell lock-ins and courtroom security measures, including physical glass barriers separating the accused from their legal counsel.

Boylan is now seeking to coordinate international parliamentarians, particularly from Spain and Germany, to monitor upcoming court dates in person or participate in a letter-writing campaign. Irish politicians have also reiterated calls for the Irish government and European institutions to send legal observers to monitor compliance with fair trial guarantees under European law.