Iran's Foreign Ministry spokesman Ramin Mehmanparast advised Iranian nationals to refrain from making unnecessary U.S. visits., Press TV reported.
Mehmanparast made the remarks upon arriving in Turkey's capital, Ankara, on Sunday following an invitation by the Turkish Foreign Ministry.
Referring to the death of Iranian national Dariush Sarreshteh-Dar in the U.S. after five hours of interrogation at Washington Dulles International Airport, Mehmanparast said, "Relevant U.S. officials and organizations are expected to investigate and announce the exact causes of this incident and to earnestly deal with any failure or fault."
He added that Iran's Foreign Ministry would pursue this matter.
Dariush Sarreshteh-Dar and his wife were detained by the Customs and Border Protection at Dulles International Airport and interrogated for five hours after returning from Tabriz, Iran, on the US election night on November 6.
Sarreshteh suffered a sudden heart attack two days later and died on the same day. His family believes that the harsh and forceful interrogation by the customs officers was the reason for his heart attack and is considering filing a lawsuit against the customs office.
Speaking of human rights issues, Mehmanparast said as the biggest violator of human rights, the US has no right to criticize other countries over the issue.
Referring to the removal of the terrorist Mujahedeen-e Khalq Organization (MKO) from the US terror list and the imposition of sanctions against the Islamic Revolution Guards Corps (IRGC) commanders and officials, Mehmanparast said, "The Americans are the biggest violators of human rights and have no right to make any comments in this regard."