RIO DE JANEIRO (AP) — The head of Brazil's intelligence agency in Rio de Janeiro says many countries are voicing concern about security during the Summer Olympics after the major attacks in Orlando, Florida, San Bernardino, California and Paris.

As the Islamic State increases its global reach, Brazilian Intelligence Agency's regional chief Frank Oliveira says information sharing between Latin America's most populous country and dozens of other nations has increased significantly in the last several months.

Oliveira told The Associated Press in a Wednesday interview that authorities have implemented new programs, such as teaching service workers how to spot suspicious behavior.

Last month, a group created on a text-messaging app Telegram began spreading jihadi propaganda in Portuguese. Earlier this year, Brazilian intelligence officials expressed concern about local residents being influenced by extremist ideology.