Tanker loading in Venezuela dwindled on Monday, following U.S. action against two more ships and as state-run energy company PDVSA struggles to recover from a cyberattack.

A Venezuela-bound vessel fled after rebuffing an attempt by the Coast Guard to seize it, the latest twist in the escalating U.S. pressure campaign against the Maduro government.

Just a day after the United States seized an oil tanker near Venezuela, another operation is underway. It would mark the third seizure in under two weeks.

President Donald Trump is gathering with top national security officials on Monday, a meeting that comes as the U.S. Coast Guard steps up efforts to interdict oil tankers in the Caribbean Sea as part of the Republican administration's escalating pressure campaign on Venezuelan President Nicolás Maduro's government.

The pursuit of the tanker, off the coast of Venezuela, is the second such operation this weekend and the third in less than a week.

A U.S. official tells ABC News that the U.S. Coast Guard is “in active pursuit of a sanctioned dark fleet vessel that is part of Venezuela’s illegal sanctions evasion.” “It is flying a false flag and under a judicial seizure order,” the official added.

A U.S. official confirms to Fox News that the Coast Guard, assisted by the Navy seized a second oil tanker near Venezuela on Saturday in accordance with President Donald Trump's blockade.

The government of the oil-rich nation took control of its petroleum industry in 1976, nationalizing hundreds of private businesses and foreign-owned assets.

The move comes days after President Donald Trump said that he was ordering a blockade of sanctioned oil tankers entering and leaving Venezuela.

Oil advanced as President Donald Trump intensified a blockade on Venezuela, with US forces boarding one tanker and pursuing another within weeks of capturing a vessel.

The U.S. Coast Guard is pursuing an oil tanker in international waters near Venezuela, officials told Reuters, in what would be the third such operation in less than two weeks if successful.

The U.S. campaign to topple President Nicolás Maduro is stranding Venezuelans around the world, compounding the misery of a beleaguered population.