The summons follows a ruling by a Manresa judge, Ramon Landa, who dismissed a case against a pro-independence activist. The protester had been accused of assaulting a police officer during King Felipe VI's visit to Montserrat, but video evidence showed the incident was accidental.

Opposition parties accuse Trapero of lying after he previously claimed the protester used an 'extensible baton.' The court confirmed the object was merely a fishing rod used as a flagpole. Critics argue this narrative was intended to criminalize a peaceful demonstration.

The controversy has led to calls for the dismissal of the police director and the potential censure of Interior Minister Núria Parlon. The security operation involved hundreds of riot police and strict checkpoints around the historic abbey.