WASHINGTON (Reuters) - The US military said it completed its latest wave of strikes on Iran that were carried out at President Donald Trump's direction and marked a seventh consecutive night of American attacks.
"US forces employed fighter aircraft, aerial drones, and warships in addition to other assets," the US Central Command said in a statement.
US strikes hit "surveillance sites, military logistics infrastructure, underground weapons storage, and maritime capabilities," it added.
Iran in turn struck US allies in the Gulf on Friday, as both sides targeted infrastructure while shipping in the Strait of Hormuz came under further assault.
Iranian state media earlier said at least five bridges were struck in the south in US attacks on Friday.
Seven people were reported killed in attacks on bridges in the southern port of Bandar Khamir, where the train station was also hit.
An airport was reported hit further east and away from the coast in Iranshahr, in a province bordering Pakistan.
Authorities in US ally Kuwait said one of the country's power generation and water desalination stations had been hit in an Iranian attack.
Trump this week reiterated threats to hit Iranian energy targets while also threatening to target bridges next week.
The 1949 Geneva Conventions on humanitarian conduct in war prohibit attacks on sites considered essential for civilians.
After Trump's past threats to strike such targets, international law experts in the US said earlier this year such attacks may amount to war crimes.
Trump received widespread condemnation in April when he threatened to destroy Iran's entire civilization before reaching a ceasefire with Tehran.
The Iran war began when the US and Israel attacked Iran on February 28 and Iran responded with its own strikes on Israel and Gulf states that host US bases.
US-Israeli strikes on Iran and Israeli attacks on Lebanon during the war have killed thousands and displaced millions.
The war has raised oil prices and shaken global markets.