Police in Brazil said Sunday that two people have been arrested in connection with an alleged plot to detonate a bomb at a free Lady Gaga concert in Rio de Janeiro. The event, on Saturday, was the biggest show of the pop star’s career that drew some 2 million fans to Copacabana Beach.

Lady Gaga performed to a record-breaking crowd during her free concert at Copacabana Beach in Rio de Janeiro, Brazil, on Saturday (May 3). "Tonight, we're making history," she told the massive audience.

The entertainer’s team was not told about the planned attack. They found out about it from media reports on Sunday.