The group planned to use explosives and Molotov cocktails against the over 2 million people at the Rio de Janeiro show.

The takedown effort was dubbed Operation Fake Monster, a darkly clever play on Gaga's devoted fanbase, the Little Monsters. Authorities executed 15 search and seizure warrants in multiple Brazilian states, including São Paulo, Rio de Janeiro, Mato Grosso, and Rio Grande do Sul, as they unraveled the digital breadcrumbs left behind by the suspects.

Lady Gaga learned about the alleged bomb threat at her concert in Brazil on Saturday, May 3, through the media her spokesperson said, according to reports.