As reported by Censor.NET citing Radio Svoboda, Montenegrin prosecutor Veljko Rutović said on air of state-run RTCG TV channel.
According to him, Shirokov is the only suspect of plotting the murder of Đukanović, who left the post after the elections. He is also accused of creating a crime ring and attempts to commit terrorist attacks.
Shirokov, 45, a resident of the Russian city of Chita, and Popov, 36, a resident of Kurgan, have recently been put on the international wanted list. Their personal data and pictures were published on Interpol's website.
According to the investigators, the Russians and a group of Serbian citizens created a crime ring plotting large-scale riots and seizure of government bodies in Montenegro immediately after the parliamentary elections of Oct 16, 2016. 20 Serbian citizens were detained in Montenegro just before the vote.
The Montenegrin authorities later accused "Russian nationalists" of involvement in attempted offenses. However, they pointed out that no evidence of perpetrators' ties with the Russian authorities was found. It is assumed that up to 500 people were involved in the coup plot.
Moscow denies allegations of its involvement.