Trump calls Iran's latest response to proposal 'TOTALLY UNACCEPTABLE'

Iranian missiles and drones "are locked on American targets in the region and aggressor enemy ships," Commander of the Iranian Revolutionary Guard Corps' Aerospace Force Gen. Majid Mousavi said in a short statement on Saturday, Islamic Republic state media reported.

Mousavi added that the military is "awaiting the command to fire."

In a separate note, the IRGC Navy Command warned in a post on X that any attack on Iranian oil tankers and commercial vessels will result in "heavy attack on one of the American centers in the region and enemy ships," the Iranian state media reported.

-ABC News' Somayeh Malekian

Iranian officials on Saturday denied Reuters' report on a suspected oil spill near Kharg Island, calling the claims "false and part of the enemy’s psychological operations."

"No official report has confirmed this issue so far," Musa Ahmadi, chairman of the energy commission of Iran’s parliament, told the semi-official ISNA News Agency on Saturday. "I have followed up on the matter, and official reports have not confirmed it," he added.

Responding to claims about damage to Iranian oil reserves and oil leaking into the sea due to the country’s inability to store it, Ahmadi said Iran had adopted "appropriate measures for oil storage and production management."

He added that oil production across the country’s fields continues "without any problems."

"The stains observed in satellite images around Kharg Island are linked to oil residue and ballast water discharged by tankers," Pourkabgani said, according to the semi-official Tasnim News Agency on Saturday.

He claimed that a European tanker "had discharged waste into the sea, causing environmental damage," but provided no further details about the vessel.

-ABC News' Somayeh Malekian

The U.S. Central Command said it redirected 58 commercial vessels and disabled four since April 13 as part of its blockade on Iran.

"The U.S. Naval blockade against Iran continues be to fully enforced," CENTCOM said in a post on X.

The United Kingdom said it is sending a destroyer, the HMS Dragon, to the Middle East in anticipation of the deployment of a future international mission in the Strait of Hormuz, AFP reported in a post on X.

The destroyer is currently in the Mediterranean, the AFP report added.

The U.K. and France said in April they were planning a "peaceful multinational mission" that would ensure safe passage for ships in the strait as a defensive measure. The two countries said it would be separate from the warring parties to the conflict and intended to be deployed as soon as circumstances permit.

On Wednesday, France deployed its carrier strike group to the Red Sea as part of planning for a potential mission to secure the Strait of Hormuz, Reuters reported.

-ABC News' Somayeh Malekian