The South African world 800 metres champion Caster Semenya has been cleared to compete as a woman, nearly a year after controversial gender tests put her career on hold.
The 19-year-old hasn't run competitively since undergoing tests at the Berlin world championships in August.
The International Association of Athletics Federations says it has accepted the conclusion of a panel of medical experts that she can compete with immediate effect.
The IAAF says the medical details of the case will remain confidential.
Lawyers acting for Semenya say the decision to allow her to compete came after a confidential landmark settlement between the IAAF and the athlete.
Semenya says she's thrilled to enter the global athletics areana again, and looks forward to competing with all the disputes behind her.
Athletics South Africa says it's been in contact with her coach to find out if Semenya can be included in the country's squad competing in the IAAF world junior championships in Canada later this month.