On Saturday, the number of casualties from the terrorist attack rose to 115.

photo credit-@South China Morning Post

During the attack, the terrorists used automatic weapons. The weapons and their ammunition were found and recovered by investigators.

photo credit - @BreakingNews.ie

The head of Russia's Federal Security Service (FSB) told President Vladimir Putin that all four perpetrators of the Moscow concert bombing have been arrested near the country's western border

The City Crocus Hall reported an increase to 93 individuals and warned that the number of casualties is expected to rise.

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According to intelligence reports, the branch of al-Qaida based in Afghanistan was planning to launch an assault on Moscow.

photo credit @CNN

80 still remain in hospitals and 13 are in an extremely serious condition while 25 remain in a serious condition

Photo credit -@SOUTH CHINA MORNING POST

Initial data indicate that the fatalities resulted from gunshot injuries and exposure to toxic fumes.

The concert hall premises were set ablaze by the terrorists, who also utilized a combustible liquid, while spectators were present.

photo credit-@CNN