The World Anti-Doping Agency (WADA) expressed "dismay" on March 7 at new revelations of possible Russian antidoping violations in a German television documentary.
An ARD program claimed, among other allegations, that Russian coaches who were suspended last year because of doping violations are still working, while others continue to provide banned substances to athletes.
Russia was suspended from international track and field in the wake of a report last year exposing widespread cheating and corruption. It now must provide evidence that it is fighting doping if it hopes to be reinstated and compete in the Rio Olympics in September.
"At a time when trust in sport is wafer thin, these troubling assertions will do little to reinforce confidence in the Russian antidoping system," said WADA President Craig Reedie.
"The allegations suggest that there is still much, much work to be done in Russia and that we will need the full and unwavering cooperation of the Russian authorities to reverse the damage," he said. "I will not hesitate to act swiftly to ensure that any breaches to the [WADA] code are dealt with firmly and expeditiously."
Based on reporting by Reuters and AFP