According to Russian mass-media, night explosion and the powerful fire which has followed it have caused a huge damage to Physicochemical Scientific Research Institute of Lev Yakovlevich Karpov.

 The explosion has destroyed laboratories, the expensive equipment of institute, exhaust ventilation system.

Approximate extent of the damage would become known in the next two days, but experts assume that one year may take to rebuild the Research Institute even if the financial aid would be provided.

According to maps showed by Russian media, the explosion occurred not in the street along the pipeline route as Russian mass-media wish to present to the readers, but inside the building of strategic facility.

According to official data, "Karpov Physicochemical Scientific Research Institute of the Order of the Red Banner of Labor is:

1. A strategic factory,

2. An organisation, running especially radiationally dangerous and nuclearly dangerous production and facilities, and

3. A factory of defense-industrial complex.

According to unofficial data, the Institute works in the field of secret production of the chemical weapons, and, probably, also the nuclear.

We would like to remind that a secret underground chemical plant for the production of chemical weapons located on the outskirts of Nienschanz (AKA St. Petersburg) was destroyed by a similar explosion on gas pipeline on 26 July 2007. However, back then the Russian authorities did not recognize this fact, despite numerous attestations of eyewitnesses.

Meanwhile it is necessary to notice that the "handwriting" of the operations against the Russian structures on manufacture of the chemical weapon in Moscow at 0.00 o'clock on May, 9th, 2009 and in St. Petersburg at 0.00 o'clock on July, 26th, 2007, is the same.

Russian mass-media reported that the explosion in Moscow occurred at 00:20 pm or 00:30 pm on May 10, however a video footage with the explosion has already been published on Russian Video sharing website "Rutube" at 0:20 pm. Consequently, the explosion occurred earlier, sometime around midnight

Responsibility for the destruction of the chemical factory in St. Petersburg claimed by by the Brigade of Martyrs from sabotage squad of the Mujahideen of "Riyad-us-Saliheen", a unit of Martyrs created in his time by Shamil Basayev.

"Riyad-us-Saliheen" at that time has warned that the Mujahideen would continue to strike at key targets in any time and anywhere in the territory of Russia which has been declared a zone of military operations.