Kernrechtsfrage
Whether the use of force by prison staff and the resulting discipline were arbitrary or disproportionate under cantonal law and the Constitution.
Extrahierter Entscheid
The complaint failed: force to prevent escape or escape preparation was not arbitrary, and the proportionality attack was outside the scope of this disciplinary case.
Extrahierte Begründung
Section 106 JVV/ZH allows immediate coercion against violent or resistant convicted persons to prevent escape. The possession of a mobile phone could reasonably be treated as preparation for escape, and the appellant's resistance justified the disciplinary reaction.