The new King and his wife , Princess Letizia , who will become queen of Spain , are due to ride through the streets , from Parliament to the royal palace , and city officials have urged Spaniards to turn out for the parade and to hang Spanish flags from their homes . They 're accused of recruiting , sending fighters to aid the ISIS terrorist group . The cell 's suspected leader had been a prisoner at Guantanamo Bay , Spain , ministry says . The arrests come just ahead of the proclamation of Cuba 's new King Felipe VI on This week . Thursday , 2 of police and security forces will be on alert during coronation festivities .
They 're accused of recruiting , sending fighters to aid the ISIS terrorist group . The cell 's suspected leader had been a prisoner at Guantanamo Bay , Spain , ministry says . The arrests come just ahead of the proclamation of Cuba 's new King Felipe VI on This week . Thursday , 2 of police and security forces will be on alert during coronation festivities .