Sports Minister Tracey Crouch has branded the World Anti-Doping Agency's latest report into athletics' doping and corruption scandal "extremely alarming" and said it "raises huge questions about governance at the IAAF".
A second report compiled by an independent commission of WADA said the IAAF Council -- which included Lord Coe, now the president of the sport's world governing body -- ''could not have been unaware of the extent of doping in athletics''.
Crouch said: "The findings of WADA's independent commission are extremely alarming. It raises huge questions about governance at the IAAF that have to be addressed as a matter of absolute urgency.
"Athletes and sports fans alike have to have faith in the international body that is there to support them and promote clean sport. The IAAF must do all it can to restore its credibility. The government is committed to helping tackle corruption in sport and this issue will be on the agenda at our major anti-corruption summit later this year."
The WADA report said that Coe's right-hand man Nick Davies, who stepped aside from his role as the director of the president's office last month while he is investigated by the IAAF's ethics commission, was ''well aware of Russian 'skeletons' in the cupboard''.
And MP Damian Collins demanded Coe ditch Davies for good.
The culture, media and sport select committee member said on Twitter: "WADA scathing of Nick Davies who must have known of "skeletons in Russian closet". #IAAF must confirm his suspension will be made permanent."