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Andriy Lysenko, the press secretary of the Prosecutor General's Office (PGO) of Ukraine, has said over 20 different tests have been conducted as part of an investigation into the murder of Belarusian journalist Pavel Sheremet in Kyiv, some of which are still under way.

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"Today, July 20, is the second anniversary of the murder of journalist Pavel Sheremet. On the same day in 2016, criminal proceedings started under Clause 5 of Part 2 of Article 115 of the Criminal Code of Ukraine (felonious homicide committed in a way dangerous for many people's life). To date, over 20 different tests have been conducted, some are still under way. As investigators say, dozens of people have been interviewed, cellphone surveillance has been conducted, CCTV footage and materials that appeared in the media have been examined," he wrote on Facebook on July 20.

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According to Lysenko, four major theories are being considered at this stage regarding the motives for the murder of Sheremet.

"His work as a journalist, personal hostile relations, destabilization of the situation in Ukraine, an erroneously chosen object (the car was owned by co-founding editor of the Ukrayinska Pravda online newspaper Olena Prytula). FBI experts have been involved in the examinations. No one has been served with charge papers yet," Lysenko said.

As UNIAN reported earlier, Pavel Sheremet, a journalist from Belarus who was residing in Kyiv, was blown up in a car on the morning of July 20, 2016. Police opened a criminal case under Clause 5 of Part 2 of Article 115 of the Criminal Code of Ukraine (felonious homicide committed in a way dangerous for many people's life).

Prosecutor General Yuriy Lutsenko called revenge for professional activity as a major theory behind the journalist's murder. Interior Minister Arsen Avakov did not rule out Russia's involvement in the assassination.