Russia has observed a day of mourning over a concert hall shooting that left 137 people dead, while three of the suspected gunmen have pleaded guilty in court.
Four men accused of staging the Russia concert hall attack that killed more than 130 people appeared before a Moscow court Sunday showing signs of severe.
A Moscow district court charged four suspects, all of whom are citizens of Tajikistan, with "committing a group terrorist attack resulting in the death of others".
Four men accused of staging the Russia concert hall attack that killed more than 130 people appeared before a Moscow court Sunday showing signs of severe.