Iran warned Russia about a major terrorist attack before the Crocus City Hall massacre.

Axar.az informs that "Reuters" news agency reported on this concerning its sources.

A few days before the Crocus attack, Tehran shared with Moscow the information it had obtained about a possible major terrorist attack inside Russia. The information was obtained during the interrogation of those arrested in connection with the explosions in Iran," the information stated.

It should be noted that 144 people were killed and 551 were injured as a result of the terrorist attack that took place in "Crocus City Hall" on March 22.