May 31 (Reuters) - Employees at several businesses in

Russia's Tatarstan region and its administrative centre of Kazan

have been evacuated for safety reasons, Russian state news

agencies reported on Friday, citing local officials.

Airports in the cities of Kazan and Nizhnekamsk in the same

region have also imposed temporary flight restrictions for

safety reasons, a representative for Rosaviatsia, the country's

aviation regulator, said on Telegram earlier on Friday.

Unverified videos on social media showed drones flying over

the Tatarstan region where both cities are located.