Verifique se as sentenças abaixo são verdadeiras ou falsas de acordo com o texto:

( ) Houve ataques terroristas inspirados pelo Estado Islâmico (ISIS) durante as Olimpíadas no Rio.

( ) Segundo o Ministro da Justiça do Brasil, os suspeitos de planejar os ataques compraram uma arma pela internet.

( ) As autoridades brasileiras se sentem despreparadas para enfrentar ataques terroristas durante as olimpíadas no Rio.

( ) Houve várias ameaças de ataques terroristas durante as Olimpíadas do Rio.

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Brazilian police arrest 12 suspected of planning terrorist acts during Olympics

Brazilian police have arrested 12 people suspected of planning terrorist acts during next month's Rio Olympics, authorities said.

The group was inspired by ISIS and mostly organized online, Justice Minister Alexandre de Moraes said. He said no specific targets were mentioned, but the Justice Ministry is still investigating the suspects' computers and cell phones to learn more about the possible plans.

De Moraes said the suspects are all Brazilian nationals, and that one minor was mentioned in the conversations.

De Moraes said the group was not an organized cell, calling it "absolutely amateur - with no preparation." The group essentially said, "Let's start training in martial arts, let's start learning how to shoot," the justice minister said.

He noted the group tried to buy a gun online, which no organized cell would do.

Raffaello Pantucci, director of international security studies at the Royal United Services Institute, said there doesn't appear to be evidence of a sophisticated plot.

But Brazil has grappled with a host of threats against the Rio Olympics, now just 11 days away.

This week, Brazil's intelligence agency said it was reviewing all threats after a jihadi messaging channel called for its followers to target the Olympics, which start August 5.

"Many (threats) are discarded and the ones that deserve attention are investigated exhaustively", the agency said.

Earlier this week, a jihadi channel on the messaging app Telegram called for attacks against the games and detailed targets and methods, according to the SITE Intelligence Group.

But Brazil has vowed it will be ready to handle any terror attempt.

A Western diplomat said venues for the games have been "hardened significantly - and I believe the government of Brazil has done what it can to make it very difficult to get into the venues here."

Brazilian forces have been working with French SWAT teams to simulate attack scenarios. In one drill, Brazil special forces and a police dog chase down an armed gunman to thwart a possible attack on Rio's subway system.

"There is not a specific threat," Lt. Gen. Luiz Linhares of Brazil's Ministry of Defense said. "You have to screen for a great (spectrum) of threat."

http://edition.cnn.com/2016/07/21/americas/brazil-olympics-terror-arrests/