Russia concert hall attack: More than 130 killed, 180 injured

Calls mounted on Monday to harshly punish those behind the Russia concert hall attack that killed more than 130 people as authorities combed the burned-out ruins of the shopping and entertainment complex for more bodies. Four men, charged with carrying out a terrorist attack, appeared in court Sunday night and showed signs of being severely beaten. Russia's Prime Minister Mikhail Mishustin said the investigation is still ongoing but vowed that ?the perpetrators will be punished, they do not deserve mercy.?