SAO PAULO (AP) — Brazilian football officials have asked CONMEBOL to probe match-fixing allegations in a 2013 Copa Libertadores game between Brazil's Corinthians and Argentina's Boca Juniors.

The Brazilian confederation said in a statement on Thursday it requested "a rigorous investigation into the alleged irregularities" in the round-of-16 match refereed by Carlos Amarilla of Paraguay.

The game ended 1-1, a result that eliminated Corinthians. The Brazilian side loudly complained, especially after two Corinthians goals were disallowed, and two penalties were allegedly ignored by Amarilla.

Argentina's America TV channel released recordings of phone conversations between Argentine officials, including former federation chief Julio Grondona, hinting that Amarilla was picked to help Boca.

Brazilian confederation president Marco Polo Del Nero said the case was "serious and has to be investigated."