Iranian news agency Mehr said Iran stopped shipping oil to Greek refiners Hellenic Petroleum and Motor Oil as well as Royal Dutch Shell due to unpaid bills.

In response, Hellenic Petroleum said we have always proved that we are in a position to supply our refineries, while Shell said it has not plans to buy any oil from Iran.

Mehr referred to the expected decline in Iranian oil supply, especially with the beginning of the EU ban to Iranian oil exports due in July, which could lead to further rise in oil prices.