The International Association of Athletics Federations has been warned by the World Anti-Doping Agency that continued denial over alleged doping corruption will make it "more difficult to make genuine progress".
ITV News Sports Editor Steve Scott is at a press conference being held in Munich by the agency as it publishes its second report in doping.
A message to Seb Coe's IAAF re past corruption "continued denial will simply make it more difficult to make genuine progress."
Senior staff at athletics' governing body must have known about doping taking place within the sport, an independent report has found.
A report is expected to reveal there is no way members of world athletics' governing body could have been unaware of the extent of doping.
Sebastian Coe has said he wished he did more to stamp out doping while a vice-president of athletics' governing body.