MOSCOW (Reuters) - At least 20 people were killed and more than 120 were injured when a Moscow underground train derailed during the morning rush hour in one of the worst accidents on the Russian capital's subway system in years.
President Vladimir Putin, who is away in Brazil, ordered a criminal investigation into the accident, which is likely to raise further questions over Russia's transport safety record. There was no suspicion of a militant attack - the cause of scores of deaths in Moscow's subway system in years past.