Federal police in Brazil have arrested 10 members of a group alleged to be preparing acts of terrorism during the Olympic Games.
The authorities said they were not members of so-called Islamic State but had tried to make contact with the group.
The arrests were made in the southern state of Parana.
They come just over two weeks before the Olympic Games get under way in Rio de Janeiro.
Justice Minister Alexandre Moraes told a news conference that all those arrested were Brazilian.
An emergency cabinet meeting has been called.