Dmitry Kovtun

On 9 January 2017, under the Magnitsky Act, the United States Treasury's Office of Foreign Assets Control updated its Specially Designated Nationals List and blacklisted Aleksandr I. Bastrykin, Andrei K. Lugovoi, Dmitri V. Kovtun, Stanislav Gordievsky, and Gennady Plaksin, which froze any of their assets held by American financial institutions or transactions with those institutions and banned their travelling to the United States.

On 22 March 2015, Kovtun appeared on BBC News at Ten and announced that he would testify, by video-link, to the enquiry into Litvinenko's death. He told the BBC he had "heard a lot of statements which are easy to refute" and by participating he could "get access to the documents – including the secret material – so I can make my own conclusions".

The Crown Prosecution Service accused Kovtun as being the second suspect of murdering Alexander Litvinenko based on the discovery of new evidence in 2011 and requested his extradition to England to stand trial in February 2012.

Both Russian and British investigators have interviewed Kovtun. Furthermore, German detectives investigated Kovtun's suspected participation to plutonium smuggling into Germany. Germany dropped the case against Kovtun on November 2009.

Kovtun met the poisoned ex-spy Alexander Litvinenko in London on several occasions, first in mid-October and later only hours before Litvinenko fell ill on 1 November. On 9 December 2006, German police report finding traces of radiation at Hamburg flat used by Kovtun. According to German investigators, the polonium traces were found on a couch where Kovtun is believed to have slept at his ex-wife's apartment in Hamburg (Altona-Ottensen) the night before he headed to London for a meeting with Litvinenko and according to British investigators, polonium traces were found on the airplanes in which Kovtun traveled between Moscow and London. Polonium traces were also found in Kovtun's car in Hamburg.

Kovtun was hospitalised in Moscow with radiation poisoning at the beginning of December 2006. On 12 December 2006, he told Russia's Channel One TV that his "health was improving." Kovtun said that he had only one explanation for the presence of polonium: "It is that I brought it back from London, where I met Alexander Litvinenko on October 16, 17 and 18." British detectives, on the other hand, believe Litvinenko was not contaminated until the meeting on 1 November.

Kovtun hails from a military family. He attended the elite Soviet military command academy in Moscow in the 1980s. Andrei Lugovoi is his childhood friend and classmate.

Dmitri Vladimirovich Kovtun (Russian: Дмитрий Владимирович Ковтун ; b. 1965) is a Russian businessman and ex-KGB agent who met the poisoned ex-spy Alexander Litvinenko several times in London, the last time hours before Litvinenko fell ill. Kovtun was hospitalised with radiation poisoning in Moscow.