The American administration has condemned the administration in Caracas over the passing of a imprisoned opposition figure, calling it a "stark reminder of the vile nature" of President Nicolás Maduro's regime.
Alfredo DĂaz died in his detention cell at the El Helicoide facility in Caracas, where he had been held for over a year, according to rights groups and opposition groups.
The Venezuelan government reported that the former governor showed symptoms of a heart attack and was transferred to a medical facility, where he died on Saturday.
This latest statement from the United States is part of an escalating war of words between the White House and President Maduro, who has claimed Washington of seeking a change in government.
In recent months, the US has expanded its troop levels in the area and has carried out a number of lethal operations on ships it says have been used for smuggling narcotics.
US President Donald Trump has accused Maduro directly of being the chief of one of the country's drug cartels—an accusation the Venezuelan president strongly rejects—and has warned of the use of force "via a land invasion".
"The detainee had been 'arbitrarily detained' in a 'center of abuse'," declared the US State Department's Bureau of Western Hemisphere Affairs.
He was detained in 2024 after participating with many opposition figures to dispute the conclusion of that year's presidential election.
Venezuela's government-controlled national electoral body proclaimed Maduro the victor, even though figures from dissidents showing their contender had triumphed by a wide margin.
The electoral process were broadly rejected on the global scene as lacking in credibility, and triggered unrest across the country.
The former governor, who led the island state, was indicted of "stoking division" and "terrorism" for questioning Maduro's electoral win.
Local advocacy group Foro Penal has voiced worry over worsening situations for political prisoners in the Latin American nation.
"Yet another jailed opponent has passed away in Venezuelan jails. He had been incarcerated for a year, in solitary confinement," wrote Alfredo Romero, the organisation's director, on a social media platform.
He noted that he had only been allowed one visit from his family during the entire length of his imprisonment. He added that 17 detained dissidents have died in the nation since that year.
Opposition groups have also condemned the administration over the passing of DĂaz.
MarĂa Corina Machado, a prominent political rival who won this year's Nobel Peace Prize but who remains in hiding to avoid detention, said that the governor's death was part of a pattern.
"Tragically, it joins an disturbing and difficult sequence of demises of political prisoners held in the context of the post-election suppression," she wrote.
The Democratic Unitary Platform declared that the former governor "passed away unfairly".
His own faction, Democratic Action (AD), also paid tribute to the ex-leader, noting he had been held without justice without fair treatment and had been kept in situations "that should never have violated his fundamental rights".
Frictions between the US and Venezuela have become progressively worse over what Trump has described as efforts to curb the flow of narcotics and migrants into the US.
Maduro has conversely claimed the US of using its drug enforcement efforts as an pretext to remove his socialist government and gain control of Venezuela's enormous crude oil deposits.
The America has also deployed a sizable naval force—its most substantial movement in the area in decades—along with thousands of troops.
In a connected development, the Venezuelan armed forces allegedly inducted more than 5,600 troops in a mass ceremony on the weekend, in answer to what army commanders called US "aggression".
Elara Vance is a tech journalist with over a decade of experience covering emerging technologies and consumer electronics.