ATHLETICS NEWS - The government investigations unit says athletes did not know Grigory Rodchenkov had given them substances.
Rodchenkov was the director of Moscow's anti-doping laboratory.
The accusation comes a week before Russia finds out if its Olympic ban for state-sponsored doping will be lifted before the 2018 Pyeongchang Games.
"It was established that Rodchenkov personally supplied the athletes and coaches with medicines whose proven features were not known to them but which later were established to constitute performance-enhancing drugs," the Investigative Committee of Russia (IC) said in a statement.
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It adds that he destroyed the athletes' samples and then accused Russia of implementing a doping programme.
Russia has always maintained that Rodchenkov, and not the state, was involved. The country's president Vladimir Putin said the allegations stemmed from "one man with a scandalous reputation".
The World Anti-Doping Agency (Wada) has previously accused Rodchenkov of asking for and accepting bribes and destroying more than 1,400 blood and urine samples.
He fled to the United States in January 2016 after Moscow's court issued an arrest warrant. The IC investigation also stated that Rodchenkov continued to work on the Moscow's laboratory's database remotely.
