Bryzhynskyi said the explosion was heard on the northern outskirts of the city and urged residents to stay in shelters and avoid filming the work of air defense systems. Read also: 13 killed, 60 injured, including children, in central Chernihiv by three Russian Iskander missiles The Ukrainian Air Force warned of enemy tactical aircraft activity in the northeast and the threat of airstrikes. Read also: Russian plans focus on Chernihiv’s key infrastructureThree people injured in Russian cluster munition strike on Chernihiv Oblast, says regional governorMonitoring Telegram channels also reported …