he development, procurement and deployment of AI in the context of law enforcement trigger the application of multiple legal frameworks, requiring actors to interface criminal procedure with data protection law, the AI Act, and human rights law more broadly. Each framework autonomously establishes obligations, rights, and oversight mechanisms that may cumulate and interact across different segments of the AI value chain. Effective compliance with applicable obligations depends on the roles and responsibilities of different actors involved, in particular law enforcement authorities, under the LED, the GDPR, and the AI Act, as well as potential overlaps and shifts in their roles. This workshop invites actors from law enforcement, academia, supervisory authorities, civil society and industry to explore this complex normative bundle through a bottom-up approach: engaging with fictional cases, participants will examine the interplay of qualifications as data controllers and processors, providers and deployers, and their obligations arising from those roles.