Costa Rica midfielder Orlando Galo faces missing the World Cup after Fifa said on Saturday that he has been provisionally suspended for a doping violation.
Galo, 22, tested positive for a prohibited substance following a random test carried out in September, the country's football federation (FCRF) said on Tuesday.
"Fifa can confirm that in accordance with the Fifa Anti-Doping Regulations the player Orlando Galo Calderon has been provisionally suspended, and the usual procedure has been opened," a Fifa spokesperson told Reuters.
Costa Rica kick off their World Cup campaign on 23 November against Spain.