Chelsea striker Claudio Pizarro has been caught up in an alleged sex romp which is threatening his international career.
The Sun says the striker's future with Peru hangs in the balance as a result.
Captain Pizarro was named, along with some of his international team-mates, in a TV programme which claimed players took women into their hotel rooms and drank long into the night.
Juvenal Silva, the president of the Commission for Selection of the Peruvian Federation, opened a formal inquiry after journalist Jaime Bayly made the allegations.
Silva said: "For those who are involved, this will be the last time they will wear the national shirt if the allegations are proved.
"I will demand a report from the security chief of the national team to investigate if the comments of Jaime Bayly are true.
"It's better to investigate so if the allegations prove to be lies the players can be calm.
"We will also ask the manager Jose del Solar for a written report as to what happened after the game against Brazil. I am very worried about these comments because they named names.
"It's for that reason we will investigate which persons were at which floor of the hotel."
The alleged orgy took place in the luxury hotel Las Inkas where Peru stayed after a 1-1 draw with Brazil and ahead of their 5-1 loss in Ecuador three days later. Blues ace Pizarro was also accused of going out until the early hours throughout that time-frame.
Pizarro, capped 45 times for his country, denies the allegations in private and insists he has done nothing wrong.
