Chechen President Akhmad Kadyrov was killed in an explosion that rocked a stadium in Grozny, capital of Russia's breakaway Chechen Republic, on Sunday, the Interfax news agency reported.
The blast occurred underneath a VIP-seating area in the Dynamo stadium during a ceremony marking Russia's 59th anniversary of victory over Nazi Germany in World War II.
It is not clear now how many people were killed or injured in the incident. Media reports said earlier a numerous number of people were injured.
General Valery Baranov, head of the Joint Army Command of the North Caucasus, were also among the injured, Interfax said.
The 52-year-old Kadyrov, a one-time Muslim cleric, was elected the republic's president earlier this year.
Russia's independent NTB TV channel reported that people in the stadium were being dispersed with the help of local servicemen.
Russia has been fighting separatists in the northern Caucasus region of Chechnya since the early 1990s.
The co-author of this disaster is the Dutch government, which did not find either strength or desire to save the lives of its citizens who were flying on that plane. The Dutch authorities did not demand Ukraine to comply with international aviation regulations
On the second day of the St. Petersburg International Economic Forum, a plenary meeting was held, in which Russian President Vladimir Putin, French President Emmanuel Macron, Japanese Prime Minister Shinzo Abe, Chinese Vice President Wang Qishan and IMF head Christine Lagarde took part