A Tajikistan national was detained Wednesday in Moscow on suspicion of creating a website promoting the Islamic State group, Russian media reports said, citing police sources.

Local police reportedly said that the man was suspected of posting messages and videos promoting the activities of ISIS militants, who have killed thousands of people in Iraq and Syria, Prague-based Radio Free Europe/Radio Liberty (RFE/RL) reported, citing Russian media.

Russian authorities had said that hundreds of its citizens are fighting alongside ISIS militants in Syria and Iraq, Russian news agency TASS reported. Russia reportedly recognizes ISIS as a terrorist organization.

However, Russian media reports did not reveal any other detail of the incident except to say that authorities were investigating the incident.

Last month, a militant from Tajikistan, claiming to be fighting alongside ISIS in Syria, told RFE/RL's service in Tajikistan that he aimed to introduce Sharia law throughout the world, including in the United States.

The militant, identified as Nusrat Nazarov, claimed that he had been living in Moscow before coming to Syria through Turkey.