An explosion occurred in the southern Iranian port of Bandar Abbas, "Reuters" reported, citing Iranian media.
The cause of the explosion was not specified. The explosion is being investigated, but Iranian media did not provide further information.
Information has emerged that a commander of the Revolutionary Guards' naval forces was the target of the explosion.
But the "Tasmin" agency in a publication that these claims are "completely false".
The port of Bandar Abbas is located on the Strait of Hormuz, a vital waterway between Iran and Oman through which about a fifth of the world's seaborne oil is transported.
The explosion comes amid heightened tensions between Tehran and Washington after Iranian authorities cracked down on protests in Iran.