The chief of mercenary group Wagner -- Yevgeny Prigozhin and nine other people were killed in a plane crash in Russia, according to TASS news agency. Yevgeny was on the list of passengers, on the plane, Rosaviatsia, Russia's aviation authority informed.

"An investigation has been launched into the Embraer plane crash that occurred tonight in the Tver region. According to the passenger list, among them is the name and surname of Yevgeny Prigozhin," Rosaviatsia said, according to a report by Reuters.

Earlier, TASS had also reported the death of 10 people in the private jet crash in Russia's Tver region north of Moscow. A private Embraer Legacy aircraft flying from Moscow to St. Petersburg had crashed near the village of Kuzhenkino in the Tver Region, Russia's emergency situations ministry said in a statement, according to TASS agency.

As per preliminary information, everyone on board had been killed, the ministry said.

On June 23, Prigozhin had vowed to “go to the end” to topple the Russian military leadership and accused them of launching strikes on his men.

However, Belarusian President Alexander Lukashenko convinced Prigozhin to end his rebellion on June 24. Prigozhin had in return asked for amnesty and security guarantees for himself and his soldiers along with permission to move to Belarus.

The Wagner chief on Tuesday posted his first video on social media, since he spearheaded a mutiny in late June. He suggested that the video was shot in Africa.