An explosion in a cafe in the center of St. Petersburg, Russia

Afghan Voice Agency (AVA): The governor of the city of St. Petersburg, Russia, says that the number of injured in the explosion today has increased to 25, out of which 19 have been admitted to the hospital.
 
Also, the emergency center of St. Petersburg announced: "There was an explosion at the Street Bar cafe on Universitetskaya Street in St. Petersburg."
 
According to reports, there was no fire after this explosion.
 
According to Readovka telegram channel, this cafe hosted a patriotic evening of military commissar "Vladlen Tatarsky" on Sunday. He died after this explosion.
 
According to local reports, it is likely that an explosive device was used in this cafe, it is believed that this explosive device was brought to this place by a woman. The strength of the explosive was more than 200 grams of TNT.
 
Vladlen Tatarsky was a blogger, military commissar, writer and soldier of the Vastok Battalion, who reported on the events of the Donbas fronts every day on his Telegram channel with more than 270,000 subscribers.