TEHRAN/WASHINGTON - Iran is finalizing preparations to carry out "deterrent operations" against military targets in Israel following Isreal's "ceasefire violations" in Lebanon, Iran's semi-official Fars news agency reported Wednesday, citing a security and military source.

Meanwhile, the semi-official Tasnim news agency reported, citing an informed source, that Iran will withdraw from the ceasefire agreement if Israel continues its attacks in Lebanon.

So far, the Israeli strike on Wednesday across Lebanon has killed at least 254 people and injured 1,165 others, with densely populated neighborhoods in the capital, Beirut, among the hardest hit, according to the latest data provided by the Lebanese Civil Defense.

The Israeli military said the strikes were part of a new operation, dubbed "Eternal Darkness." It said the campaign aims to target Hezbollah command and control centers in southern and eastern Lebanon, as well as in Beirut.

Report: Strait of Hormuz fully closed

Iran's state-run Press TV reported on Wednesday that the Strait of Hormuz has been fully closed, forcing oil tankers to turn back.

It citied maritime tracking data as showing that an oil tanker named AUROURA, which was heading toward the waterway's exit, had suddenly changed course near the Musandam coast and made a 180-degree turn, returning deeper into the Gulf.

The report added the maneuver occurred at one of the "most sensitive" sections of the international shipping route, between Larak Island and the Musandam Peninsula, "an area considered highly strategic due to the heavy traffic of energy shipments and its geopolitical importance."

This comes as Fars news agency said earlier in the day that the oil tankers' movements across the Strait of Hormuz had stopped concurrent with Israel's fresh deadly attacks on Lebanon.

According to Fars, after the ceasefire was achieved, Tehran allowed two oil tankers to safely cross the Strait of Hormuz.

ALSO READ: US, Iran agree on 2-week ceasefire

Iran's Islamic Revolution Guard Corps (IRGC) warned that if Israel does not immediately stop attacking Lebanon, it will receive a "regret-inducing" response.

It made the announcement in a statement published on its official news outlet Sepah News after the Israeli military earlier in the day launched waves of strikes across Lebanon, killing and injuring hundreds, despite a two-week ceasefire between the United States and Iran.

The IRGC said while only a few hours have elapsed since the announcement of the ceasefire agreement, Israel has started a "brutal massacre" in Lebanon, warning that the United States and Israel of its "regret-inducing" response if the attacks are not immediately stopped.

Condemning the Israeli attacks on Lebanon, Iran's Foreign Minister Seyed Abbas Araghchi said in a post on social media platform X, "The Iran-US ceasefire terms are clear and explicit: the US must choose -- ceasefire or continued war via Israel. It cannot have both."

A two-week ceasefire was announced early Wednesday by the United States and Iran. The office of Israeli Prime Minister Benjamin Netanyahu said Israel would comply with the truce but would continue military operations in Lebanon.

Trump: Lebanon not included in ceasefire

Trump said on Wednesday that Lebanon is not included in the US-Iran two-week ceasefire.

"That's a separate skirmish," Trump told PBS in a phone interview when asked about Israel's continued strikes on Lebanon.

He added that Hezbollah is not included in the deal and will "get taken care of too.”

Trump said Wednesday that he is considering setting up a "joint venture" with Iran to charge tolls from vessels passing through the Strait of Hormuz.

ALSO READ: Iran issues 10-point plan calling for permanent end to war

"We're thinking of doing it as a joint venture," Trump told ABC News. "It's a way of securing it -- also securing it from lots of other people. It's a beautiful thing," he said.

On Tuesday night, Trump wrote on Truth Social that "big money" could be made by the United States "helping with the traffic buildup in the Strait of Hormuz."

US Vice-President JD Vance will lead the US team to attend in-person peace negotiations with Iran in Pakistan, which is expected to begin on Saturday morning, White House Press Secretary Karoline Leavitt said Wednesday.

Trump's envoy Steve Witkoff and his son-in-law Jared Kushner will accompany Vance in the talks, Leavitt said at a White House press briefing.

Pakistan has proposed hosting talks between US and Iranian negotiators in Islamabad as early as Friday.