Russia's FSB appears the most likely party in the apparent death of Prigozhin.
UK sources told the BBC the agency probably targeted the plane Prigozhin was apparently on.
Putin once ran the FSB himself, and had a long career in its Soviet precursor, the KGB.
Germany's foreign minister said the crash seemed to fit "this pattern in Putin's Russia: deaths, dubious suicides, falls from windows, all which remain unclarified – that underlines a dictatorial power system that is built on violence."
AdvertisementAdvertisementWhite House National Security Spokesperson Adrienne Watson said that if Prigozhin's death is confirmed "no one should be surprised."
Persons:
Prigozhin, Putin, Vladimir Putin, Wagner, Yevgeny Prigozhin, Alexei Navalny, Alexander Litvinenko, it's, Adrienne Watson, Flightradar24
Organizations:
FSB, BBC, KGB, Service, Wednesday, Soviet Union's KGB, Kremlin, CIA, Guardian, National, Reuters
Locations:
Wall, Silicon, Russia's Tver, Moscow, Russia, Ukraine