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Russia's FSB security service on Saturday said that the perpetrators of a deadly attack on a Moscow concert hall had "contacts" in Ukraine and were trying to flee there, state news agencies reported.
"After committing the terrorist attack, the criminals intended to cross the Russian-Ukrainian border, and had appropriate contacts on the Ukrainian side," the state-run TASS news agency quoted the FSB as saying, after it announced 11 arrests over the attack.
Russian investigators said "terrorists" set fire to the concert hall using a "flammable liquid" after they went on a shooting rampage that killed over 90 people.
"The terrorists used a flammable liquid to set fire to the concert hall premises where there were spectators, including wounded," Russia's Investigative Committee, which probes major crimes, said about Friday's attack.
(Except for the headline, this story has not been edited by NDTV staff and is published from a syndicated feed.)