A Brazilian judge has ordered the arrest of a man suspected of being involved in an alleged plot to place explosives at a concert of singer Lady Gaga in Rio de Janeiro

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

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.