Iran live updates: Trump to hold national security meeting Monday, officials say

Cargo tracking group Vortexa told ABC News it identified 34 sanctioned or Iranian-linked ships moving in and out of the Gulf of Oman through the U.S. blockade of Iranian ports which came into effect on April 13.

Fifteen of those were inbound toward Iran, while 19 were outbound away from Iran.

Of the observed outbound movements, six of the ships were confirmed to be laden with approximately 10.7 million barrels of Iranian crude oil.

However, after Vortexa shared its data and media outlets named three of those ships, U.S. Central Command (CENTCOM) publicly refuted that the three named ships had evaded the blockade.

CENTCOM said two of those ships -- the Hero II and Hedy -- had returned to an Iranian port, and that the third -- the Dorena -- was "under the escort of a U.S. Navy destroyer in the Indian Ocean after previously attempting to violate the blockade."

It was not immediately clear whether the M/T Majestic X, which the U.S. announced Thursday it had interdicted in the Indian Ocean for carrying oil from Iran, was also one of the ships tracked as having moved through the blockade.

Vortexa said that the blockade is having some effect but, "based on observed vessel activity, flows have continued, although in a more constrained and selective environment."

TankerTrackers.com, a maritime intelligence company that tracks crude oil shipments, told ABC News that they observed nine shipments of Iranian oil pass through the U.S. blockade between April 13 and 20, one of which has been sent back to Iran.

Of the nine shipments, eight were tankers belonging to Iran's National Iranian Tanker Company and one was independently-owned.

-ABC News' Victoria Beaule and Chris Looft

The Pentagon said in a post to X on Thursday that U.S. forces interdicted and boarded the M/T Majestic X tanker in the Indian Ocean overnight, a vessel it said was "transporting oil from Iran" as part of Tehran's illicit oil fleet.

The seizure is the second this week in the Indian Ocean. "We will continue global maritime enforcement to disrupt illicit networks and interdict vessels providing material support to Iran, wherever they operate," the Pentagon said.

-ABC News' Luis Martinez

Hamidreza Hajibabaei, the deputy speaker of Iran's parliament, said Thursday that the first revenues from Iran's new tolls on shipping transiting the Strait of Hormuz have been deposited into the state's central bank account, according to the semi-official Fars News Agency.

"We have control over this Strait," Hajibabaei said, speaking at a public gathering in the western city of Kuhdasht.

"If the United States continues on its current course, no vessels will pass through the Strait of Hormuz," Hajibabaei said. He added, "We are not engaged in negotiations -- rather, we are making demands."

Alireza Salimi, another member of the Iranian parliament, confirmed the deposit of the revenues in an interview with the semi-official Tasnim News Agency on Thursday.

"The amount collected from each ship depends on its cargo and level of risk they pose," Salimi said, as quoted by Tasnim.

"Iran determines how much and how these fees are collected, in other words, we determine the rules," Salimi said.

-ABC News' Somayeh Malekian

Israeli and Lebanese ambassadors are expected to convene again at the State Department on Thursday for a second round of meetings amid the latest conflagration in the Middle East.

The first direct negotiations between the two states since 1993 are intended as preparatory meetings to shape future talks on a deal to normalize ties between the countries.

Thursday's meeting is expected to focus on extending a shaky ceasefire that has halted fighting between Israel and the Iran-backed Hezbollah militia.

The technocratic government in Beirut, which came to power in 2025, is juggling dual pressure campaigns -- sustained Israeli attacks and seizure of Lebanese territory on one hand and the internal threat of Hezbollah and its Iranian backers on the other.

Lebanese President Joseph Aoun said on Tuesday that the goal of the negotiations was to "stop hostilities, end the Israeli occupation of southern regions and deploy the [Lebanese] army all the way to the internationally recognized southern borders."

Paul Salem, a senior fellow at the Middle East Institute think tank, told ABC news that Thursday's talks are "historically significant in what they might eventually lead to," but framed the meetings as the first steps on a long and difficult road.

The government in Beirut is facing "a prolonged conundrum," Salem said. "Iran is insisting on maintaining its presence and backing Hezbollah in Lebanon. Hezbollah seems to be happy to continue to play their role with Iran."

And in southern Lebanon, Israel seems intent on a devastating campaign and seizure of land which its Defense Minister Israel Katz has repeatedly said will be modeled on the destruction of Gaza.

"The Lebanese state needs to be able to bolster its credibility by not allowing a long-term Israeli occupation," Salem said.