Russian police discovered some 400 kilograms of explosives in a militant hideout in the Russian Republic of Ingushetia, after getting their hands on secret information about the arms dump.
During the special operation, Russian security forces found nine 40-liter barrels of an explosive substance and two devices also stuffed with explosives, the National Anti-Terrorist Committee reports.
The materials were buried underground outside of a small village in Western Ingushetia, deep in the south of Russia.
According to police, the destructive force of the materials is equivalent to 450 kilos of TNT.
Experts allege that the hideout was constructed by militants in 2005-2006 and belonged to Chechen terrorist Shamil Basaev, who was killed during an anti-terrorist operation in 2006.
Basaev claimed responsibility for dozens of terrorist attacks in Russia between 1995 and 2005, including the siege of the Dubrovka theater where some 900 people were taken hostage during a performance. That attack claimed the lives of 130 hostages.