When we put that allegation to the coaches there was a look of shock to be honest because running on different size prostheses or swapping them for races is extremely difficult to do for an athlete.
There is no evidence that any athlete competed on different size running blades.
Unless the South Africans can come to us with some evidence that proves otherwise, it's something that we won't continue investigating.
Former Formula One driver Alessandro Zanardi told ITV News that winning gold in the handcycling was a moment of "a little bit of sadness".
Oscar Pistorius is back in action in the T44 100m Heats after his outburst after losing to Brazalian Alan Oliveira in the T44 200m final.