Vollsmose terrorist trial
The Vollsmose terrorists were three men convicted of attempted terrorism in Denmark in 2007–2008. Nine men were initially arrested by Danish police in the Vollsmose neighbourhood of Odense on 5 September 2006, but most were later released without charges, including a police mole who played a role in the investigation and trial.
Source: Wikipedia — Vollsmose terrorist trial (CC BY-SA 4.0)