Brazilian police said on Sunday that they foiled a bomb plot launch an attack during record artist Lady Gaga's concert in Rio de Janeiro on Saturday.

The concert drew about 2 million to Copacabana Beach.

"The suspects were recruiting participants, including minors, to carry out coordinated attacks using improvised explosives and Molotov cocktails," the police said in a statement.

Reuters reported that Brazilian authorities conducted more than 12 search and seizure warrants in the Brazilian states of Rio de Janeiro, Mato Grosso, Rio Grande do Sul and Sao Paulo.

The leader of the group allegedly behind the plot was arrested in Rio Grande do Sul for illegal firearm possession and another suspect, a teenager, was detained in Rio de Janeiro for child pornography possession.