Overview
- A lethal Islamist-motivated attack at Berlin's Christopher Street Day left one woman dead and 31 injured, and investigators found a pledge to the Islamic State on the suspect's phone.
- Senior politicians including Thorsten Frei and Interior Minister Alexander Dobrindt are urging rapid federal changes to permit preventive detention and compulsory ankle monitors for so-called Gefährder, with Frei aiming to press proposals in August.
- Berlin police and its president say investigators monitored the suspect but did not have the admissible evidence required to seek court-ordered preventive custody or an electronic bracelet.
- Berlin tightened its police law in December 2025 to allow short-term custody and ankle monitors for Gefährder, while the Bundesrat in June approved a separate change to let courts use ankle monitors nationwide for domestic-violence protection from July 1, 2027.
- Experts and officials warn that courts must authorize such measures, that prediction of future violence is legally and technically hard, and that wider use would strain court resources, raise civil-rights challenges, and require new federal rules and monitoring capacity.