Two members of the French national rugby team touring South America were arrested in Argentina following an allegation of sexual assault, a justice official in Mendoza province told AFP.

Hugo Auradou and Oscar Jegou, who featured in France's 28-13 Test victory over Argentina on Saturday, were detained in Buenos Aires and will be taken to Mendoza where the crime allegedly took place.

"Today a commission from the province of Mendoza is travelling to Buenos Aires to bring them and proceed with doing the relevant examinations," said Martin Ahumada, a spokesman for the Mendoza prosecutor's office.

"If the examinations align with the testimony of the victim, the related charge will be made," he told AFP.

According to local media reports, the alleged attack took place at the Diplomatic Hotel in Mendoza, where France's players and staff were staying for last weekend's Test match.

Local prosecutors requested the immediate arrest of the two players following the allegation.

France are due to travel to Montevideo on Tuesday where they face Uruguay on Wednesday. The team is then due to return to Buenos Aires for a second Test against Argentina on Saturday.

"If the facts are proven, they are incredibly serious. You must spare a thought for the young woman," said French Rugby Federation (FFR) president Florian Grill.

"It's the opposite of everything that rugby is, of everything that rugby does, of everything that rugby builds... But you must let the investigation, which is necessary, take place," he told journalists.