Two people were arrested on suspicion of explosives at a free Lady Gaga concert in Rio de Janeiro, an attempt against Brazil's LGBTQ community.

Saturday’s Rio event was the biggest performance of a pop singer’s career. It attracted about 2.1 million fans to Copacabana Beach, and the crowd screamed and danced.

"They clearly said they are planning to launch an attack at a concert in Lady Gaga," Rio de Janeiro Police Secretary Felipe Cury said in a press conference on Sunday.

Rio Police Chief Luiz Lima said the organization spread hate speech and violent content online “to attract more audiences, more participants, most of them teenagers, many of them children.”

Even though Brazilian authorities said they arrested the suspects a few hours before the Lady Gaga show, the event was not interrupted - leading some to question the severity of the threat. Serious security issues often lead to organizers canceling large-scale events – like Taylor Swift’s concert in Vienna last year.

The police did not say the so-called conspiracy at the time to "avoid panic" and "information distortion."

A spokesman for Lady Gaga said the pop star and her team “have learned about the alleged threat through media coverage this morning. There were no known security issues before and during the show, and no communication between police or authorities regarding any potential risks with Lady Gaga.”

"During the entire planning and execution of the concert, her team worked closely with law enforcement, and all parties were confident in the security measures already taken," the statement added.

At Saturday's concert, security was tight, with 5,200 military and police deployed to the beach, and fans were reveling in the pop singer's classic hits, including Born this Way, which became the LGBTQ national anthem after its release in 2011.

Authorities arrested two people in connection with the alleged plot - a charge described as the leader of the Southern Rio Grande state possessing illegal weapons, and a teenager in Rio de Janeiro involved in child sexual abuse charges. Police did not elaborate on their exact role in the plot, nor did they introduce the group’s goal for a free concert by Lady Gaga.

"The people involved are recruiting participants, including teenagers, to conduct a comprehensive attack using simple explosives and Molotov cocktails," police said.

The Justice Department said the organization poses a "public order risk." It said the group mistakenly used itself as a little monster (the fan nickname of Lady Gaga) online to attract Teeangers to "a network of violent and self-destructive content."

Authorities confiscated telephones and other electronic devices in a series of raids on the homes of 15 suspects in several Brazilian countries. Although police said they believed the homemade bomb was intended for use in planned attacks, no mention of any weapons or explosive material appeared by the raiders.

Curry said one of the suspects was a criminal suspect in the attack in Mecca, near Rio, "had a religious motive" and "declared (Lady Gaga) as a Satanist".

In an Instagram post, Lady Gaga thanked the huge crowd.

"Nothing prepares me for the feeling of last night's show - the absolute pride and joy of singing for the Brazilian people," she wrote. "In my opening song, the crowds held my breath.

Her free beach concert stands out as tickets for live music worldwide rises as the concert singers pay the budget loss to watch their favorite artists.

Last month, Lady Gaga performed at the Coachella Valley Music Festival in California, with tickets over $600 for a weekend. The high ticket prices for her upcoming show in Australia have also attracted local criticism.

Last May, superstar Madonna also performed on Copacabana Beach, performing on the sprawling beach for about 1.6 million fans in her latest World Tower.