IOC claims "It's not our job"
How can the IOC claim that "It's not their job to check the age of competitors" when it's the IOC that set the rules regarding gymnast ages?
They CAN'T just ignore this, as the team concerned are now the Gold Medallists. The moment these allegations arose, they needed to start investigating. They can't just turn a 'blind eye' as the team also belongs to the host country, whom they do not wish to offend.