A Russian military serviceman was detained after allegedly shooting five soldiers in the Kharkiv region on 13 October. Police opened a criminal investigation after the shooting inside a residential house. Investigators recorded the offence under part 2 of Article 115 of Ukraine’s Criminal Code, intentional murder of two or more people. Authorities later confirmed the deaths through the 72nd Separate Mechanized Brigade. Investigators are working to establish all the circumstances, including whether the attacker was linked to Russia’s sabotage and reconnaissance groups. In the 24 hours after the crime, the Security Service of Ukraine, the National Police and the National Guard detained a 36-year-old Russian serviceman. The case file says he is from Saint Petersburg, served in Russia’s 1009 motor rifle regiment, and had previously been convicted. Interior Minister Ivan Vyhiyovskyi said the main priority was to catch the attacker quickly and prevent further deaths. The investigation is continuing, and further proceedings will be handled by the SBU.