"So far five planes carrying ... vegetables have been sent to Qatar, each carrying around 90 tonnes of cargo, while another plane will be sent today", Iran Air spokesman Shahrokh Noushabadi said. The sanctions have disrupted flows of imports and other materials into Qatar and caused many foreign banks to scale back their business with the country.
"It is neither humane nor Islamic to attempt to isolate a country's people in every area from food, to drink, to travel, to commerce, to worship", he said in a parliamentary speech. "Victimising Qatar through smear campaigns serves no objective", he added.
The three countries' aviation bodies also said non-Qatari private and chartered flights from Qatar must submit requests to them at least 24 hours before crossing the airspace. Turkey and Qatar have both provided support for the Muslim Brotherhood in Egypt and backed rebels fighting to overthrow Syrian President Bashar al-Assad.
Qassemi said that current tension in relations between the Persian Gulf Arab states is a outcome of the "wrong Riyadh summit".
Some analysts say demands could also include closing down satellite channel Al Jazeera, or changing its editorial policy. It is the worst crisis for the GCC since its creation in 1981. "So there is an assessment phase going on right now".
Over the weekend, Qatari Foreign Minister Sheikh Mohammed bin Abdulrahman Al Thani was in Moscow following a telephone call between Putin and Qatar's ruling emir Sheikh Tamin bin Hamad Al Thani.
Qatar has launched two new shipping services to Omani ports after other Gulf states severed ties with Doha last week, raising concerns over food supplies to import-dependent Qatar. The move was seen as support by regional power and North Atlantic Treaty Organisation member Turkey to Doha.
US President Donald Trump on Friday accused Qatar of funding terrorism "at a very high level", urging the Gulf Arab country to stop the funding.