Authorities say the suspects were part of an extremist group spreading violent, anti-LGBTQ rhetoric and recruiting teens to carry out attacks using homemade explosives.

Brazilian police said Sunday they had arrested two people in connection with a foiled plot to attack Lady Gaga's packed mega-concert in Rio de Janeiro.

Lady Gaga rocked Rio de Janeiro's Copacabana Beach on Saturday with a free mega-concert that the Brazilian city said drew about two million fans. Rio officials had expected a turnout for the Gaga ...