Iranian officials warned on July 18 that two oil tankers had exploded after hitting mines in the Strait of Hormuz, and urged ships to "avoid entering the mined path to protect investments and crews," according to…

Iranian officials warned on July 18 that two oil tankers had exploded after hitting mines in the Strait of Hormuz, and urged ships to "avoid entering the mined path to protect investments and crews," according to reports.

Incidents involving mines are among the most serious risks for shipping, because mines can remain dangerous long after they are laid and are hard to detect.

The report did not name the tankers, give their location or say who laid the mines. The account came from Iranian officials.

Shipping operators will look to maritime security advisories and naval statements for confirmed details. Reports like this can push up insurance costs and affect oil prices quickly.