MOSCOW, March 23. /TASS/. Russia’s special services and law enforcement agencies are investigating the incident at the Crocus City Hall music venue, so the culprits, organizers and contractors of this terrorist attack will be brought to account, Russian Foreign Ministry Spokeswoman Maria Zakharova said.

"The Russian special services and law enforcement agencies are investigating what happened. The perpetrators, organizers and contractors of the terrorist attack will be hold accountable. The required legal and political assessments will be given. We sincerely thank everyone who did not remain indifferent in the wake of the tragedy," the diplomat said.