Yevgeny Prigozhin, the mercenary leader who led an armed rebellion in Russia on Saturday, was never afraid of a dirty task, many say.

Emerging from jail as the Soviet Union was collapsing, he began his post-criminal career selling hot dogs on street corners in St. Petersburg, Russia. There, he befriended Vladimir Putin, then a minor official in the city government, developed a catering business and earned billions on government contracts when Putin became prime minister and then president of Russia.

Prigozhin quickly earned the trust of his benefactor, who assigned him a number of important tasks that were best handled at arm’s length from the government. The first and most notorious of those was overseeing the Internet Research Agency, a troll farm founded in 2013 to flood the United States and Europe with disinformation that discredited liberal elites and promoted hard-right ideologies.