Part of the ISIS threat to Moscow appears to be coming from Chechnya, a republic in the south of Russia controlled by a strongman faithful to Putin, Ramzan Kadyrov.

Russian security officials reported on Tuesday that the latest plot for an attack on Moscow was hatched in the Chechen capital of Grozny. The Russian Federal Security Service (FSB) said that it had detained a few suspects, including some persons from Chechnya and Syria, who were planning the Moscow attack in order “to destabilize state power and stop us from using the military against ISIS in Syria.”

One of the suspects, Aslan Baisultanov, had received an order to conduct a terrorist attack from a man called Shamil Cherkizov. Baisultanov admitted he traveled to Moscow from Chechnya with explosives. “I had to come to Moscow with this substance,” Baisultanov told the judge on Tuesday.

FSB Director Alexander Bortnikov reported at a national anti-terrost committee meeting this week that 12 Russian citizens detained in Moscow on Monday were ISIS members and accomplices who were preparing attacks on public transport in the national capital.