Iran head coach Dragan Skocic and Mehdi Taremi, one of the nation's highest-profile players, have questioned the decision to hold the country's World Cup qualifiers in Bahrain when play resumes in June.
The Iranians were informed by the Asian Football Confederation last week that the Gulf state will host the remaining matches in group C of the second round of the competition, which also features Iraq, Cambodia and Hong Kong.
Porto striker Taremi accused the AFC of anti-Iran bias in a post on social media and questioned why Bahrain was given the hosting rights at a time when temperatures can hit 38 degrees.