“A preventive measure in the form of detention until August 10 was chosen,” the agency was told.

In turn, the source confirmed that the arrested person was entering the cell of IG *, whose members were detained the day before.

On July 13, the FSB announced the detention of six residents of the Rostov Region - citizens of Russia and one of the Central Asian countries.

According to intelligence agencies, they prepared attacks on police officers and planned attacks in medical and educational institutions.

* “Islamic State” (IG) - the organization was recognized as terrorist by decision of the Supreme Court of the Russian Federation of December 29, 2014.