Official measures President of Serbia Aleksandar Vučić addressed the public about the shooting later in the day, saying that he would propose new gun measures to the
government, as well as lowering the minimum age of criminal responsibility from 14 to 12. The government adopted the policy agenda the next day. The new measures also included a moratorium on gun permits, more medical and psychological checks on gun owners, and hiring 1,200 police officers for schools. At a press conference, Education Minister
Branko Ružić announced three
national days of mourning starting from 5 May and a suspension of classes for the rest of the day, while Health Minister
Danica Grujičić announced that the
Institute of Mental Health would activate two
telephone counselling helplines and increase access to in-person counselling, for those who feel the need for psychological support. The
National Theatre in Belgrade suspended all activities until 7 May. Vučić also cancelled his attendance at the
coronation of Charles III and Camilla in London; in response, Charles III expressed his condolences. On 11 May, the government formed the Peer Violence Prevention Council, headed by Prime Minister
Ana Brnabić. The constitutive session of the council was held on 30 May. The council will focus on reducing
peer violence. A team of psychotherapists from
Norway, who dealt with the trauma suffered by their citizens after the
terror attacks committed by
Anders Behring Breivik in 2011, will come to Serbia to help due to their similar experience.
Hand Over Your Weapons On 8 May, the Serbian Ministry of Internal Affairs offered a one-month
amnesty for surrendering illegal or unregistered weapons and ammunition. Initially set to end on 8 June, the call, known as
Hand Over Your Weapons (), had extended the deadline to 30 June. The ministry reported that citizens handed over 78,302 firearms, 4,085,000 rounds of ammunition, and 25,914 pieces of ordnance by the end of the call.
Inquiry Committee On 18 July,
MNA Marinika Tepić was elected as the chairperson of the
National Assembly's Inquiry Committee to determine the facts and circumstances that led to the mass murders at the school shooting and
Mladenovac and Smederevo shootings. However, three days later, National Assembly suspended further proceedings of the Inquiry Committee until the criminal proceedings were ongoing, following the request of the victims' families.
Continuation of classes 2022–23 school year More than 200 parents of students from the Vladislav Ribnikar Model Elementary School joined the initiative to suspend classes in the existing school building immediately and to conclude the 2022–23
school year on 3 May, when the shooting happened. On 22 May, the Vladislav Ribnikar School continued their classes for the first time after the shooting incident. Six police officers will be present in the school. Since 5 June, all students have been attending classes in the afternoon shift at Sveti Sava Elementary School. On 1 June, the Government of Serbia announced that the 2022–23 school year ends on 6 June instead of 20 June. The government also said that schools can continue to work until 20 June for students who wish to do so. In that period, supplementary, additional and preparatory classes, classes in nature, as well as other forms of educational work, can be implemented to encourage students' social and emotional skills and activities on the topics of tolerance, empathy, togetherness, support and gratitude. They also said that all students unsatisfied with their success will have the opportunity to improve their grades at their request until 20 June. This decision shocked parents, students and professors as it came almost one month after the shooting without an announcement before. The decision was heavily criticised because of the way that it was announced, which unions called disrespectful to education workers. It was also criticised because it was vague and unclear how professors were supposed to conclude grades. Ana Dimitrijević from Forum of Belgrade's
Gymnasiums called this decision hasty and humiliating.
2023–24 school year On 1 September, the 2023–24 school year began regularly as planned. At the Ribnikar school, works on the renovation of the school's interior and exterior facade, as well as two gymnasiums, are nearing completion. A questionnaire made by the Norwegian psychotherapists for assessing the degree of traumatic experience will be presented at the Ribnikar school. Four months after the shooting, employees of the Ribnikar school planted ten
cedar trees in pots in front of the school door in memory of the victims.
Kecmanović's further education In August, the Kecmanović's mother, according to
Blic, addressed the institutions with a request to resolve the issue of further education of her two children, him and his younger sister, from 1 September. Also,
online education is an option for him due to his placement under the care of the Child and Adolescent Neurology and Psychiatry Clinic. On 21 August, the Vladislav Ribnikar School Teachers' Council
decided to expel him from their school. However, the Education Minister
Slavica Đukić Dejanović explained that it is not possible for the Teachers' Council to exclude a student from a school. Also, she added that Kecmanović could continue his elementary education in the Dragan Hercog Elementary School in Belgrade, the only school in Serbia which teaches students who cannot continue normal elementary education due to health problems. The
school's director Zoran Aleksić confirmed that he will continue his education in the school and that it is yet to be determined which education model will be used in his case.
Protests with the inscription: "" () Hundreds of citizens, including the parents of the elementary school students, had gathered in front and around the elementary school after the shooting. They later protested in front of the Ministry of Health and the Ministry of Education buildings, where they demanded Ružić's resignation. The protests grew larger the next day. Citizens in cities such as
Novi Sad,
Niš,
Kragujevac, and neighbouring countries paid their respects on the day of the shooting. Following the shootings, opposition parties, namely the
Ujedinjeni parliamentary group,
People's Party,
Do not let Belgrade drown,
Together,
Democratic Party, and
Dveri announced that they would organise a protest against violence on 8 May. The protestors met in front of the country's parliament before marching in silence through the streets near Serbian government offices to demanded the resignation of Vulin, Gašić, Ružić, and the Council of the , as well as cancelling programmes that promote violence and shutting down media and tabloids that publish false news and violate the Journalistic Code. In response, Prime Minister Brnabić accused them of "politicising" the shootings. Tens of thousands of people gathered in Belgrade and several other cities in Serbia (Novi Sad, Kragujevac,
Kraljevo, and
Čačak) on 8 May for the "Serbia Against Violence" protest, reacting to two mass murders. According to the organisers, the protest in Belgrade was attended by approximately 50,000 demonstrators. The second protest was held on 12 May; it began in front of the
National Assembly of Serbia building while the demonstrators continued walking to the
Gazela Bridge, and it ended at
Sava Centar. Another "Serbia Against Violence" protest was held a day later in Kragujevac.
Domino effect arrests More than ten arrests were made in the first week following the shooting involving
juveniles and/or school-related
misdemeanours. • On 5 May, a 13-year-old boy from
Kruševac posted on his
Instagram account that he planned to "repeat this massacre on Friday". • On 6 May, the police brought in for questioning a minor who was filming herself on
TikTok and making fun of the murders at the Vračar school. • On 6 May, the police in
Novi Sad arrested three boys who published photos of weapons they wanted to take to school. • On 6 May, the police in
Niš arrested a 17-year-old because he threatened on his Instagram account that "more than 30 people will be killed in Niš." • On 6 May, the police in
Sremska Mitrovica arrested a 22-year-old because he posted on social media that the subsequent shooting would be in Sremska Mitrovica. • On 7 May, a man from the Belgrade suburb of
Leštane was arrested after calling the police, stating that he would commit a
copycat massacre. • On 8 May, the police in
Kikinda arrested an 18-year-old who posted a classroom drawing with bloody figures lying next to desks while one was holding an object similar to a handgun. • On 9 May, the police in
Subotica apprehended a boy who planned to commit a massacre with a bomb. The U.S.
Federal Bureau of Investigation (FBI) found him. • On 9 May, an 18-year-old from Kraljevo was arrested because he posted on social media that the Vračar shooter was released from custody and would come to kill half of the students in his school. The Kraljevo police also arrested two minor boys who posted photos from school on social media in which they were holding a handgun. • On 9 May, the
Montenegrin police in
Žabljak apprehended a minor who supported the Vračar shooter on social media. • On 10 May, the police in
Sombor apprehended an 18-year-old who posted on social media and verbally confirmed that he would take an
automatic rifle to his school. • On 10 May, the police in
Vrnjačka Banja apprehended a 15-year-old who threatened his classmates on social media. • On 15 May, a 14-year-old female student cut a classmate with a
knife in
Zrenjanin. The police apprehended her mother. • On 15 May, the police in Novi Sad apprehended a 14-year-old girl who threatened her classmates and glorified the shooter on social media. • On 16 June, the police apprehended a man who left a
baseball cap with a plastic bullet in front of the Ribnikar School during the fortieth-day memorial service. From 3 May to 7 July, criminal charges were filed against 82 students over 14 years old for endangering safety and spreading panic and disorder through social networks. Of them, 29 were arrested and taken to judicial authorities for further action. In addition to these arrests, on 18 May, the police evacuated students from the Stari Grad Electrical Engineering School in Belgrade following an unknown person threatening to come armed to the school.
Other Slovenian
NBA All-Star Luka Dončić, who is of partial Serbian decent, offered to pay the funeral expenses of the murdered. However, Belgrade's local administration later announced that it would do so instead. The Serbian writer found himself the target of attacks on social media after speculations emerged that his book () was an inspiration to the underage shooter, who committed mass murder. The writer has the same first and last name as the shooter's father, and they are distant relatives. In July 2023, T-shirts with the
redacted shooter's face were advertised and sold on a well-known
online shopping platform based in
Morocco. ==Reactions==