Death of Venezuela's Opposition Figure in Custody Described as 'Despicable' by United States Representatives.

The American administration has criticized the Venezuelan government over the death of a detained political dissident, describing it as a "clear indication of the vile essence" of President Nicolás Maduro's regime.

The former governor died in his prison cell at the El Helicoide facility in Caracas, where he had been detained for over a year, as reported by rights groups and political opponents.

The officials in Venezuela reported that the man in his fifties displayed signs of a myocardial infarction and was taken to a hospital, where he succumbed on Saturday.

Intensifying War of Words Between Washington and Caracas

This new criticism from the US is part of an intensifying diplomatic spat between the American government and President Maduro, who has accused America of seeking a change in government.

In the past few months, the US has expanded its military presence in the area and has conducted a series of lethal strikes on boats it asserts have been used for trafficking illegal substances.

US President Donald Trump has accused Maduro personally of being the leader of one of the country's cartels—an allegation the Venezuelan president vehemently denies—and has threatened armed intervention "on the ground".

"The detainee had been 'unjustly imprisoned' in a 'center of abuse'," stated the US foreign policy division.

Background of the Detention

He was arrested in that year after being among many dissidents to dispute the results of that period's presidential election.

Venezuela's pro-government national electoral body announced Maduro the victor, notwithstanding counts by rivals showing their contender had triumphed by a wide margin.

The electoral process were widely dismissed on the world stage as lacking in credibility, and triggered protests around the nation.

Díaz, who was in charge of the Nueva Esparta state, was accused of "promoting hatred" and "terrorist acts" for disputing Maduro's declaration of success.

Reactions from Rights Groups and the Political Rivals

Venezuelan rights organization Foro Penal has voiced worry over worsening conditions for political prisoners in the Latin American nation.

"One more detained dissident has lost his life in Venezuelan prisons. He had been imprisoned for a twelve months, in solitary confinement," wrote Alfredo Romero, the body's president, on a social network.

He noted that Díaz had only been granted one meeting from his child during the whole time of his incarceration. He added that over a dozen political prisoners have died in the country since that year.

Opposition groups have also criticized the administration over the death of the former governor.

María Corina Machado, a well-known political rival who was awarded this period's Nobel Peace Prize but who remains in concealment to escape detention, stated that his death was not a one-off event.

"Sadly, it contributes to an alarming and difficult chain of deaths of political prisoners imprisoned in the wake of the electoral crackdown," she said.

The Democratic Unitary Platform stated that Díaz "was an unjust death".

His own party, Democratic Action (AD), also paid tribute to the former governor, saying he had been unjustly detained without fair treatment and had stayed in situations "that infringed upon his basic rights".

Wider International Strains

Strains between the United States and Venezuela have become increasingly strained over what Trump has described as attempts to curb the flow of narcotics and migrants into the United States.

• US air strikes on vessels in the regional waters have killed over eighty persons.
• Trump has claimed Maduro of "clearing out his prisons and mental institutions" into the US.
• The US has labeled two Venezuelan narco-groups as terrorist organisations.

Maduro has conversely accused the US of using its anti-narcotics campaign as an excuse to overthrow his regime and get its hands on Venezuela's enormous oil reserves.

The US has also stationed a significant fleet—its biggest movement in the area in decades—along with numerous troops.

In a parallel move, the Venezuelan military allegedly inducted more than 5,600 recruits in one go on the weekend, in response to what defense officials called US "intimidation".