The Kremlin has promised that Russia will treat all unfounded allegations of doping against its sportspeople as slander, the RIA news agency reported on Wednesday.
The statement was seemingly issued as a swift response to a report by German public broadcaster ARD that said Russian Sports Minister Vitaly Mutko was directly implicated in the scandal over doping by Russia's sportsmen and women.
"All this does not mean that we are ready to accept any unfounded allegations, any unsubstantiated accusations," Kremlin spokesman Dmitry Peskov said, adding any new wider allegations not underpinned by hard evidence would be treated as "absolute slander".
The Sports Ministry, in a statement replying to the charge, did not directly address the allegations against Mutko and other state officials.
Mutko could not be reached for comment.
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ARD/WDR, whose reports on systematic Russian doping have led to a widespread investigation and the suspension of Russia's track and field athletes, made its latest charge in a documentary to be broadcast on Wednesday.
It said it had documents showing Mutko had prevented the release of a positive doping test involving a footballer from Russia's top league.
The broadcaster also said it had footage of coaches, banned for life for doping, continuing to train top athletes.
"The Taskforce of the International Athletics Federation IAAF, which had been presented with the research results for this film ... informed us ... that the research was a 'very serious matter' as well as a 'matter of urgency' and represented a 'grave concern'," ARD/WDR said in a statement on the program.
The Sports Ministry said in its statement it understood doping was a large-scale global problem.
"Solving it requires a consolidation of efforts aimed at a continuous improvement of the anti-doping system by all interested parties," the ministry said.
It said it had agreed on a road map with the World Anti-Doping Agency (WADA) to reform its structure directly involved in doping offences.
Russia was suspended from world athletics in November after an international investigation uncovered damning evidence of widespread doping and corruption.
It is trying to convince sports authorities it is serious about rooting out cheats as it waits to hear on June 17 whether its track and field stars will be allowed to compete at the Rio de Janeiro Olympics in August.
