An explosion rocked the southern Iranian port of Bandar Abbas on Saturday, Iranian news agencies said, but the cause of the blast was not known. The semi-official Tasnim news agency said that social media reports alleging that a Revolutionary Guard navy commander had been targeted were "completely false". Separately, four people were killed after a gas explosion in the city of Ahvaz near the Iraqi border, according to state-run Tehran Times. France 24’s international affairs editor Kethevane Gorjestani takes a look at what we know so far.