These legal documents from 2000–2003 detail the Russian FSB and Prosecutor General's investigation into the 1999 apartment bombings in Moscow and Volgodonsk (Criminal Cases No. 103 and 173). The investigation identifies Arab mercenaries Khattab and Abu Umar as the primary organizers, with Achemez Gochiyayev leading the execution group. The records describe the logistical chain of transporting approximately nine tons of explosives from the North Caucasus to Moscow, explicitly identifying a mixture of TNT, aluminum powder, and hexogen (RDX) used in the devices. Key operational details include the detention of Ruslan Magayev in 1999, the 'blind' use of truck owner Abbaskuli Iskenderov in the Volgodonsk plot, and the eventual extradition of Adam Dekkushev and Yusuf Krymshamkhalov from Georgia in 2002. The documents also track the reported deaths of suspects Denis Saitakov and Khattab, the involvement of Saudi national Abu Al-Walid Al-Ghamidi, and the subsequent consolidation of regional investigations into a single federal case. An unrelated page regarding teacher training (page 17) appears misplaced in the file.