Brazilian police have ordered the detention of 12 people who allegedly pledged allegiance to the Islamic state group via social media and discussed possible attacks during the Rio de Janeiro Olympics.
The justice minister said ten suspects had been arrested and two more were being sought after.
All 12 are Brazilian and one is a minor.
Police acted because the group discussed the use of weapons and guerrilla tactics to potentially launch an attack during the Olympics, which begin on August 5.
The arrests were made in ten different states.
There were no specific targets for an attack.
Last week, the top military aide for Brazil’s interim government said concerns over terrorism had “reached a higher level” after the attack in Nice, France.