On Tuesday evening, Josep Lluis Trapero, the chief of the Catalan regional police force, the Mossos, issued an internal memo to all of his officers regarding the new independence referendum, the illegality of which the Public Prosecutor's office described on Tuesday as "beyond all doubt".

Major Trapero, along with the senior Civil Guard and National Police officers in the region, had been given 24 hours to make sure all of his officers were aware of the prosecutor's policing instructions to stop the referendum.

The internal document contains four paragraphs and complies with that inst...