Afghanistan, Nov. 5 -- Iran's Islamic Revolutionary Guard Corps (IRGC) said on Thursday that two oil tankers and a tugboat caught fire in separate incidents in the Strait of Hormuz after attempting to use routes it described as unauthorized.

In a statement carried by Iranian state media, the IRGC said one tanker struck a naval mine while attempting to cross a passage south of the strait. In a separate incident, another supertanker caught fire while leaving a route in the eastern part of the waterway. A tugboat that approached the second vessel to help extinguish the blaze also caught fire.

The IRGC did not identify the vessels, specify their flags or report whether any crew members were injured. The claims had not been independently verif...