[1] In early August 1942 at the end of a Requiem Mass for fallen Carlists in the Spanish Civil War celebrated at the church of San Vicente de Abando in Bilbao, shouts were heard against the Falangists.

[2] On the eve of the celebration, the Commander of the Falange Militia of Bilbao informed his Regional Head, based in Burgos, that among the attendees at Begoña would be Basque nationalists disguised in Carlist uniform with weapons ready to provoke an incident.

In San Sebastián they picked up Juan José Domínguez Muñoz who, like Calleja, had just returned from the Eastern Front where they fought with the Blue Division.

He also called Minister of the Interior Valentín Galarza Morante to demand surrender of the detainees to the military courts to be subject to a summary court-martial.

That day he called General Varela by telephone who told him there had been an attack against him and only luck saved him from death to which Franco responded: "Everything is to be done with great fairness, because in the case of a provocation things will vary".