Photo: frame from the video.
Unknown in Warsaw climbed onto the monument to the victims of the Smolensk plane crash and threatened to cause an explosion.
Polish television reports that the police have now cordoned off Pilsudski Square. Negotiations are underway with the attacker. However, the man has not yet put forward any clear demands.
Eyewitnesses say that there is a package near the man’s feet. But there is no data yet on whether it actually contains an explosive device.