Sergei Dolgov

Concerned about this situation, the Greek MEP Konstantinos Papadakis (Communist Party of Greece, or KKE) issued a statement on December 8, the request of the European Commission: his wife had complained that Dolgov was kidnapped in a "cleansing operation", held in the city of Mariupol by "nationalist" and "fascist" forces associated with the authorities in Kiev. However, the government of Ukraine refused to comment. Rumors circulated that the SBU’s head had confirmed that Dolgov was being held in Zaporishia. On March 5, after three months, European Commission representative Federica Mogherini responded:

Dolgov was abducted from the Vestnik Pryazovya office on the afternoon of 18 June 2014 by six masked men in civilian dress with automatic weapons. The perpetrators took computers. They beat Dolgov and then took him away with his hands tied. Colleagues of Dolgov think his abduction was linked to his editing of Khochu v SSSR, which mainly published historical articles about the Soviet era and which was considered by some Ukrainian newspapers a "separatist" publication. His whereabouts and the identity and motive of his abductors remained unknown for five days.

Konstatin Dolgov, who is also a leader of the pro-separatist People's Front of Novorossiya movement, added that his namesake had been "tortured" by kidnappers, saying "the enhanced interrogation ended in the death of the journalist." According to employees of Vestnik Priazovya, Dolgov had been missing since mid-June when masked men armed with automatic rifles barged into their editorial offices in the eastern Ukrainian town of Mariupol and abducted Dolgov, tying up his hands with wire. Serhiy Spasitel, the head of the Mariupol regional branch of Ukraine's Security Service, said a few days later that Dolgov was alive and well, but that questions about his specific whereabouts should be addressed to Ukraine's Anti-Terror Center — the SBU agency in charge of combating the separatist movement in the country's east. Mariupol Prosecutor Serhiy Reznitsky also denied any knowledge of the supposed abduction, saying police and prosecutors "do not always know what is happening [at the Anti-Terror Center]"

Three other examples of attacks and arrests happened in Mariupol in 2014. In May 2014, Graham Phillips, a British journalist who works for the Russian pro-government TV station Russia Today, was released on the evening of 21 May after being arrested the previous day by the National Guard at a border post on the outskirts of Mariupol, and being taken immediately to the headquarters of the Security Service of Ukraine (SBU) in Kiev for interrogation. Phillips said he was arrested for having a bulletproof vest. Vlad Alexandrovich was kidnapped in Mariupol, where he had been working for Anna News and Southeast Front, two news agencies allied with the pro-Russian rebels. He is said to have been the author of reports about the Ukrainian army actions in Mariupol on May 9. His abductors are thought to have been Ukrainian security officials. September 9, freelance photographer Maksim Voytenko was suspected of spying. September 15, he was arrested at a Ukrainian checkpoint in Mariupol, and was released after being questioned for seven hours.

Much of Dolgov's personal life is unknown. According to Amnesty International, Sergei had a wife named Olga Dolgova who expressed great concern for his safety and believed her husband at the time was being held at the military base A1978 in Zaporizhia.

Sergei Dolgov, also transliterated as Sergey or Serhiy, (ca. 1964), was a Ukrainian journalist from Russia who served as editor for the Vestnik Pryazovya and Khochu v SSSR in Mariupol, Ukraine before he went missing. He was notorious for promoting neo-Sovietism and cancellation of the state of Ukraine for the lost Soviet Union. Media supporting the Russian government declared his disappearance a murder.