Moscow, Dec 21 (Reporter) A drone attack on Russia’s city of Kazan has caused fire breakouts in three districts, Sovetsky, Kirovsky and Privolzhsky, the mayor’s office said on Saturday. "This morning in Kazan, following an attack by unmanned aerial vehicles, fires broke out in several houses in the Sovetsky, Kirovsky, and Privolzhsky districts," the statement reads on Telegram. The office said earlier in the day that the fire affected two districts, Sovetsky and Kirovsky. The authorities urged citizens to remain calm and proceed to go downstairs when a siren is heard...////...