The Barcelona star says that he may not represent Argentina again after missing a penalty as the Albiceleste lost to Chile in a shootout at MetLife Stadium on Sunday
"The national team is over for me. That's four finals [lost]; it's not for me," Messi told reporters after losing his third final in as many years. "The decision is made, I think."
Sunday's match finished without a goal and went to a penalty shootout, with Messi missing his spot kick on the way to a 4-2 defeat.
It was the second time in as many years that Chile beat Argentina on penalties in the Copa, which itself followed the Albiceleste's loss to Germany in the World Cup final in 2014. Messi also was part of the Argentina side who lost to Brazil in the final in 2007.
"I feel a great sadness right now that this is happening again," he said. "I missed my penalty, which was super important. That's it."
Argentina's next matches are in World Cup qualification ahead of the 2018 tournament in Russia. Gerardo Martino's men sit third in the CONMEBOL pool after six matches.