SAO PAULO –  The security director for the 2016 Olympic Games allegedly committed fraud when he occupied the same position during the Pan American Games held in Rio de Janeiro four years ago, Brazil's public prosecutor's office said Friday.

Paula Amaral, a spokeswoman for the prosecutor's office, said that Luiz Fernando Correa spent 40 million reals ($20 million) in 2007 for the purchase of security equipment that a later investigation showed was worth 22 million reals ($11 million).

"He overbilled the government by 80 percent," Amaral said.

The prosecutor's office ordered the investigation because the purchase was made without comparing market prices, which is required by law for any government acquisition made without a bidding process, she said.

The Rio 2016 Organizing Committee for the Olympic Games said neither it nor Correa had immediate comment on the charges.

A committee official said Correa remains the head of security for the Rio Olympics. The official declined to be identified because he was not authorized to speak to the press.

Correa was also responsible during the Pan American Games for contracting services and buying the equipment needed to provide security for athletes and authorities at the event, Amaral said.

"In February 2007, he signed a contract for the purchase of intelligence equipment with a consortium of 11 companies that included Motorola Solutions," she said, adding that no bidding was held because Correa claimed the purchase was a national security matter. She would not give details on the equipment purchased.

Karla Otranto, a spokeswoman for Motorola Solutions Inc., said the company had no immediate comment because all of its directors were traveling overseas.

Amaral said the evidence in the case is with a federal judge, who will decide if the case will go to trial.

If Correa is found guilty, he will have to pay the government the amount overbilled.