Popular Party spokesman Pablo Casado, the party's deputy secretary for communications, said during a press conference on Monday that Carles Puigdemont, the current First Minister of Catalonia, could "end up" like former First Minister Lluis Companys, who also declared the independence of the region on October 6, 1934.

Mr. Casado was referring to the 83rd anniversary, which was last Friday.

"Let's hope that nothing is declared tomorrow because perhaps the person who makes the declaration will end up like the person who made the declaration 83 years ago."

Casado did not specify if he...