According to Deputy of Interior Minister of Ukraine Anton Herashchenko, the terrorist who took the hostages called the police at 9:25 am at the same day and introduced himself as "Maksim Plokhoy", claiming to have a bomb.

[12] The police began Operation Hostage, and the Security Service of Ukraine introduced the Boomerang plan.

[17] The President of Ukraine Volodymyr Zelensky stated that he was keeping the situation under control and was trying to resolve the crisis without casualties.

[30][31][16] Deputy of Interior Minister Anton Herashchenko explained that the assault was carried out because police didn't know whether Kryvosh would do anything else.

[34] The Guardian reports the following consequence: Late on Tuesday [July 21], the Ukrainian interior minister, Arsen Avakov, said: “The film … is a good one.

And you don’t have to be so screwed up and cause such a horror for the whole country – you can watch it without that.”[35] On 24 July, a court in Kharkiv took into custody a possible accomplice of Kryvosh, Dmytro Mykhaylenko.

[37] After the arrest of the perpetrator, he was charged under four articles of the Criminal Code: taking hostages, illegal handling of weapons, encroachment on the life of a law enforcement officer, and terrorist act.

[39] His father, Stepan Kryvosh, an associate professor of the Polytechnic University, is an author of a patent for the manufacture of a collector of an electric machine and a method for hardening ring-shaped parts.

[45] Kryvosh later stated that he had originally planned to seize the Orthodox Church of Ukraine Holy Trinity Cathedral in Lutsk.

[46] The Security Service of Ukraine's actions during the incident were criticized for incompetence, in particular for allowing the terrorist to negotiate with President Zelensky.