An evacuation has been reported at the IQ Quarter tower in Moscow-City, the Russian capital’s business district, amid a drone attack on Moscow.

Witnesses told Ostorozhno Novosti Telegram channel that everyone inside the building had been evacuated and was waiting near the entrance. Visitors also reported hearing a siren inside the tower.

According to eyewitnesses, a public address announcement said the building was being evacuated due to a “drone threat.”

The IQ Quarter complex houses several Russian government agencies, including the Ministry of Economic Development, the Ministry of Industry and Trade, the Ministry of Digital Development, Communications and Mass Media, and the Federal Agency for Technical Regulation and Metrology (Rosstandart).