The evidence collected by the Rostov Regional Investigative Department of the Investigative Committee of Russia was found by court to be sufficient to issue a sentence over Taganrog resident Vladislav Shulga. He was found guilty of committing crimes under Paragraph C of Part 2 of Article 111 of the Criminal Code (intentional infliction of grievous harm to health), Paragraph A of Part 2 of Article 112 of the Criminal Code (intentional infliction of grievous harm to health), Part 1 of Article 115 of the Criminal Code (intentional infliction of light harm to health). Part 1, Article 115 of the Criminal Code (intentional infliction of minor injury to health).

The investigation and the court found that in 2017 Vladislav Shulga, being at his place of work at Taganrog Aviation Scientific and Technical Complex named after G.M.Beriev, acting on the basis of personal animosity toward several employees of the company, added to the 19-liter bottles of drinking water a chemical substance containing thallium that he had prepared in advance and that has a significant toxic effect on the human body. His deliberate actions resulted in the mass poisoning of the company's employees.  

At the initial stage of the investigation, Shulga made a confession to the investigation, which he confirmed during the testimony at the scene. Subsequently, he changed his earlier testimony, stating his noninvolvement in the crimes. However, during the investigation of the criminal case all arguments of Vladislav Shulga were thoroughly checked, his numerous petitions and complaints were considered, including allegedly unauthorized methods of investigation, a set of investigative actions and operational-search activities were conducted, witnesses and victims were questioned, information extracted from Shulga's cell phone and social networks was analyzed, physical evidence was examined, including that taken from the place of residence of the convict. According to the results of chemical examinations, a chemical substance containing thallium was found in a bottle seized from the factory premises and on chemical scales seized from Shulga's home.

The court sentenced Shulga to 8 years of imprisonment in a general regime penal colony.