Peru forward Jefferson Farfan will miss his side's World Cup match with Australia on Tuesday after suffering a "traumatic brain injury" in training on Saturday.
According to BBC Sport, the 33-year-old is in hospital after a collision with a team-mate left him unconscious for "a couple of minutes."
The Peruvian Football Federation said test results have been "favourable for the player," but because of FIFA's rules on concussion, Farfan will miss Peru's final match in Russia.
This article will be updated to provide more information on this story as it becomes available.