The total number of victims was previously recorded at 115, and it is expected to rise even further considering the degree of destruction wreaked on the performance hall.
The incident left around 150 persons wounded.
At least four men armed with assault guns attacked the stadium on Friday evening, just before a rock music began. The assailants stormed into the performance hall, shooting victims at point-blank range before setting it on fire.
The suspects left the scene of the crime, but were captured by Russian authorities near the country’s border in Bryansk Region. According to preliminary investigations, the attackers intended to get into Ukraine.