After the incident, security officials displayed aggression to the reporters covering the event.

[3] The attack took place on the eve of the security services day [ru], when President Putin was at a festive concert dedicated to this day, and the shooting also came hours after Putin's annual press conference.

According to preliminary data, the attacker was alone, and his name was Yevgeny Manyurov (Russian: Евгений Манюров), 39, who was from a small town near Moscow.

Due to the inconsistency of the special services, the shooting continued after Manyurov was killed; this may have led to additional casualties.

[4][5] Soon after the shooting, there was report that the attacker "was shouting slogans typical of Islamic State",[5] but in his apartment, insignia of the NOD movement,[6] known for its provocations against the opposition, was found, along with indications that he was a member of a Neo-Nazi group called the Ethnic National Union.