A Moscow court has ordered the detention of four suspects in the largest attack on Russian soil in more than a decade as the country held a day of mourning over the assault, which killed at least 137 people and injured 180.
The men, who are accused of storming a Moscow music venue on Friday evening, shooting concertgoers and setting the building on fire, appeared before the court late on Sunday. Their identities were confirmed for the first time and they were placed in custody pending trial.
Three of the men were officially identified as citizens of Tajikistan, the Tass state news agency said, citing its reporter in the courtroom. The fourth suspect is also believed to come from the country. Several of the men asked for translators as they could not speak Russian.