The US Federal Bureau of Investigation seized the mobile phone of Claudio Tapia, president of the Argentine Football Association (AFA), at New York's JFK Airport.
The action is part of an ongoing probe into alleged money laundering involving AFA sponsors, according to reports from Media Indonesia.
The seizure represents a significant intensification of the US inquiry, which was first reported by Euronews Albania and Koha.
Tapia and the AFA have firmly denied the allegations.
The seizure represents a significant intensification of the US inquiry, which was first reported by Euronews Albania and Koha.net.
While the investigation initially focused on financial irregularities, the physical confiscation of the federation chief's device suggests investigators are seeking direct digital evidence.
This development adds a layer of legal uncertainty to the governance of one of the world's most prominent football associations.