Tehran: Iran's Islamic Revolutionary Guard Corps (IRGC) announced that two oil tankers attempting to leave an 'unsafe route' south of the Strait of Hormuz turned back after a fire broke out on one of the vessels, according to Iran's state broadcaster IRIB. In a statement, the IRGC said, 'Last night, two oil tankers, provoked by American birds, attempted to leave the unsafe route south of the Strait of Hormuz. After a severe fire broke out in one of them, both vessels quickly turned back.' "Countries involved in aiding the aggressor will receive a harsh response if they do not correct their behaviour,' the statement said. On the continued status of the Strait of Hormuz, the IRGC said it could not be reopened while American authorities continued 'exaggerations and threats' and interference in maritime movements in the region.