These were muzzies according to Jihad Watch.

The court's spokeswoman, Natalya Osipova, said the assailants took the two guards hostage but were quickly engaged by the courthouse's security. She said the other four defendants facing charges in the same criminal case were in a separate room when the incident happened.

Three of the defendants were killed and the other two were wounded in the ensuing shootout with the court's guards. Russian state television showed the footage of the blooded bodies spread in a courthouse corridor.
The defendants, all from ex-Soviet Central Asia, were accused of killing 17 motorists near Moscow in a series of attacks in 2012-2014.

Russia media dubbed the accused "the Grand Theft Auto gang" after the violent video game. Prosecutors said the gang numbered 14 men who were placing spikes on roads, forcing the motorists out of their vehicles and shooting them dead.
http://abcnews.go.com/International/...oscow-48964571