Members of Russia's Federal Security Service, or FSB, carried out the raid along with police.

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State news: The operation targeted suspected members of Islamic extremist groups

More than 30 of those detained are foreign nationals

CNN  — 

Russian authorities detained 140 people – more than 30 of them foreign nationals – on Friday in a raid targeting suspected members of Islamic extremist groups, state media reported.

The operation was conducted at a place of worship in Dar Ul-Arkam in southern Moscow, state-run RIA Novosti reported, citing information from law enforcement agencies.

Members of Russia’s Federal Security Service, or FSB, carried out the raid along with police. Russia Today, a state-funded television network, said the FSB issued a statement about the raid.

This site has been visited in the past by suspected radicals – some from the North Caucasus region, which includes Chechnya – the RIA Novosti report said.