MADRID, 15 May. (EUROPA PRESS) -

The adviser to the mayor of the besieged Ukrainian city of Mariupol, Petro Andriushchenko, has denounced that Russia has launched white phosphorus bombs at the Azovstal steel mill -- one of the city's last defensive bastions -- shortly after the victory of the country in the Eurovision contest.

"Hell has come to Earth. To Azovstal," Andriushchenko declared in a message on his Telegram account, accompanied by a video with images of artillery fire.

"They used 9M22S incendiary projectiles with thermite layers. The combustion temperature is about 2,000 to 2,500 degrees Celsius. It is almost impossible to stop the burning," he denounced.

"It is incredible how our defenders endure. We are all in irrevocable debt to them," he added in the message, collected by the Ukrainian news portal Focus.

White phosphorous bombs are an incendiary projectile whose contents begin to burn on contact with air. Its indiscriminate range and brutal devastation prohibit its use in populated areas under international law.

The adviser has published images of projectiles where inscriptions could be read referring to the Kalush Orchestra, the winning group of the song contest held on Saturday night in Italy.

"This is how Russia reacts to our victory," added the adviser, accompanied by an image of a Russian bomb with the legend "Kalush, as you requested", along with the date of the end of the concert, this Saturday, May 14, according to a translation. of the DPA agency. The images could not be independently verified.

Right now there are about 1,000 people sheltering at the besieged Azovstal plant. Attempts to rescue them are proving difficult, and they continue to reject Russian calls for them to surrender.