The airport in St. Petersburg has closed to all traffic, according to Russian media.
According to Reuters, it is about at least five domestic flights that have been forced to turn around after alarms that an “unidentified object was seen from the sky”.
On the site Flightradar, it will be possible to see how planes turn from the airport.
Russian media channel Baza states that fighter jets have been sent up to investigate the object.
According to an anonymous source for the Russian television channel REN TV, an airspace of 200 kilometers is closed.
According to local Russian authorities, there are delays of up to 12 hours at the airport.