Racists attack again in St. Petersburg?

I just heard a report on Echo of Moscow Radio - apparently an Angolan student was attacked last night in the St. Petersburg metro by knife-wielding assailants, and one of the two people arrested in connection with the attack is a student of a military academy. However, when I go to the news page of Echo's website , the headline is there but it takes me to a broken link . Maybe this means they are verifying the story - the initial broadcast I heard didn't cite a specific source, and I haven't been able to find this story on any of the Russian wires. Stay tuned...