Ireland star Annalise Murphy returns silver medal as athletes complain of rusting

Complaints include rusting, flaking and black spots.

Eyebrows were raised at the Rio Olympics last summer when the swimming pools turned green and now it looks like we can add rusting medals to the list of unusual features of the 2016 Games.

At least 100 Olympic athletes say that their medals from the Games are defective and are sending them back to be replaced.