The strike is the first by the US against Iranian targets in several weeks. The last known attack took place in late July.
Iranian forces were reportedly about to deploy new mines in the important waterway when the US attacked, Axios and AP write, citing American sources.
Residents near the Iranian island of Larak have heard explosions, the Iranian state news agency Fars reports.
Reports of deaths
Iran's Revolutionary Guards said in a statement that the attack would be responded to. According to the Guards, several people - both soldiers and civilians - have been killed and injured.
“This action was a strategic and fatal mistake by the Trump regime,” said Guard spokesman Sardar Mohebbi, in a statement carried by Iranian state media, adding that it will have costs in both the “military and economic fields.”
The US attack comes just days after President Donald Trump and Treasury Secretary Scott Bessent stressed that economic pressure – “an economic D-Day” – will bring down the Iranian regime. A sanctions plan has been presented to isolate Iran economically, and the country’s allies have also been threatened with action.
Threats to maritime traffic
On Saturday, an oil tanker traveling through the Strait of Hormuz was hit by a projectile, according to the British Navy's maritime surveillance agency, UKMTO.
Since the outbreak of the war, when the US and Israel launched attacks in late February, Iran has threatened maritime traffic through the strait. The Iranian military has repeatedly fired on ships that it deemed had disobeyed orders to turn back.
The US, in turn, has blocked traffic to and from Iranian ports.
The US military recently said it had cleared the strait's international shipping lanes of mines, writes AP.
