The US government has criticized the administration in Caracas over the passing of a imprisoned political dissident, describing it as a "stark reminder of the despicable character" of President Nicolás Maduro's regime.
The former governor died in his cell at the El Helicoide facility in Caracas, where he had been held for more than a year, as reported by rights groups and opposition groups.
The officials in Venezuela said that the man in his fifties displayed symptoms of a cardiac arrest and was taken to a medical facility, where he passed away on the weekend.
This new intervention from the United States is part of an escalating exchange of rhetoric between the White House and President Maduro, who has accused the US of pursuing his overthrow.
In the past few months, the US has boosted its military presence in the Latin America and has executed a series of deadly operations on vessels it asserts have been used for smuggling drugs.
US President Donald Trump has claimed Maduro personally of being the leader of one of the area's drug cartels—an accusation the Venezuelan president categorically refutes—and has threatened armed intervention "by land".
"The detainee had been 'unjustly imprisoned' in a 'torture centre'," stated the American diplomatic office for the region.
DĂaz was detained in 2024 after participating with several political opponents to dispute the outcome of that period's national vote.
Venezuela's government-controlled national electoral body proclaimed Maduro the winner, notwithstanding counts by rivals indicating their contender had been victorious by a wide margin.
The vote were broadly rejected on the global scene as flawed and unfair, and sparked protests across the nation.
The former governor, who governed the island state, was indicted of "stoking division" and "terrorist acts" for disputing Maduro's declaration of success.
Venezuelan rights organization Foro Penal has raised concerns over declining situations for political prisoners in the country.
"Another jailed opponent has lost his life in Venezuelan detention centers. He had been incarcerated for a year, in segregation," posted Alfredo Romero, the organisation's director, on a social media platform.
He noted that DĂaz had only been permitted one encounter from his daughter during the whole time of his incarceration. He also mentioned that 17 detained dissidents have died in the nation since that year.
Political rivals have also denounced the administration over the death of DĂaz.
MarĂa Corina Machado, a prominent political rival who won this period's Nobel Peace Prize but who stays in seclusion to escape arrest, commented that DĂaz's demise was part of a pattern.
"Sadly, it contributes to an alarming and heartbreaking sequence of demises of jailed opponents held in the wake of the after the vote crackdown," she wrote.
The coalition of rivals declared that the former governor "died unjustly".
His own party, Democratic Action (AD), also paid tribute to the former governor, noting he had been unjustly detained without fair treatment and had remained in situations "that infringed upon his fundamental rights".
Tensions between the United States and Venezuela have become ever more tense over what Trump has called actions to curb the flow of narcotics and migrants into the US.
Maduro has for his part alleged the US of using its drug enforcement efforts as an pretext to overthrow his socialist government and get its hands on Venezuela's enormous crude oil deposits.
The United States has also stationed a sizable fleet—its largest presence in the area in decades—along with many military personnel.
In a connected move, the Venezuelan army according to reports enlisted more than 5,600 recruits in a mass ceremony on the weekend, in answer to what defense officials described as US "intimidation".
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