London: The IAAF has been accused of trying to "muddy the waters" in the ongoing doping scandal by one of the experts at the centre of the case.

Michael Ashenden, one of two anti-doping experts enlisted by the Sunday Times to analyse leaked data belonging to the IAAF, has issued a response to the world governing body's statement, released on Friday, in which it insisted it had used "every tool available to it to catch blood dopers in athletics and with considerable success".