The Russian apartment bombings were a series of explosions that hit four apartment blocks in the Russian cities of Buynaksk, Moscow, and Volgodonsk in September 1999, killing 293 people and injuring 651. The explosions occurred in Buynaksk on 4 September, Moscow on 9 and 13 September, and Volgodonsk on 16 September. Several other bombs were defused in Moscow at the time.