Air alert announced throughout Ukraine due to takeoff of enemy MiG-31K

On the evening of April 4, an air alert was announced throughout Ukraine.
This was reported by Censor.NET with reference to the online air raid alert map.
"Attention! Missile danger throughout Ukraine! MiG-31K is taking off. Do not ignore the air raid alert!" the Armed Forces of Ukraine wrote on their telegram channel.
The danger lasted 29 minutes. At 8:04 p.m., all clear signal.