Passing of Venezuelan Political Dissident in Custody Described as 'Abhorrent' by United States Officials.

The US government has criticized the Venezuelan government over the death of a imprisoned opposition figure, labeling it a "stark reminder of the despicable character" of President Nicolás Maduro's rule.

The former governor was found dead in his detention cell at the El Helicoide detention center in Caracas, where he had been held for in excess of twelve months, as stated by rights groups and dissident factions.

The Caracas administration reported that the former governor exhibited signs of a heart attack and was taken to a medical facility, where he died on Saturday.

Escalating Rhetoric Between US and Caracas

This recent intervention from the US is part of an escalating diplomatic spat between the White House and President Maduro, who has claimed Washington of seeking regime change.

In recent months, the US has boosted its armed forces deployment in the Latin America and has carried out a series of fatal operations on boats it claims have been used for moving illegal substances.

US President Donald Trump has alleged Maduro personally of being the head of one of the area's narco-trafficking organizations—an accusation the Venezuelan president vehemently denies—and has hinted at armed intervention "by land".

"He had been 'arbitrarily detained' in a 'torture centre'," declared the American diplomatic office for the region.

Background of the Imprisonment

The opposition figure was arrested in that year after being among many opposition figures to contest the results of that year's presidential election.

Venezuela's government-controlled national electoral body announced Maduro the winner, even though opposition tallies suggesting their contender had triumphed by a landslide.

The electoral process were broadly rejected on the international stage as neither free nor fair, and sparked protests across the country.

The former governor, who governed the Nueva Esparta state, was charged of "stoking division" and "terrorist acts" for disputing Maduro's claim to victory.

Reactions from Advocates and the Opposition

Venezuelan rights organization Foro Penal has expressed alarm over declining situations for political prisoners in the country.

"Yet another political prisoner has died in Venezuelan prisons. He had been imprisoned for a year, in isolation," posted Alfredo Romero, the body's director, on a social network.

He said that he had only been allowed one visit from his family during the entire length of his incarceration. He also mentioned that over a dozen detained dissidents have lost their lives in the nation since that year.

Political rivals have also denounced the administration over the passing of Díaz.

María Corina Machado, a leading political rival who was awarded this period's Nobel Peace Prize but who remains in concealment to evade detention, commented that Díaz's death was not a one-off event.

"Unfortunately, it adds to an disturbing and painful series of demises of political prisoners imprisoned in the wake of the electoral repression," she wrote.

The opposition alliance said that the former governor "passed away unfairly".

Díaz's own party, Democratic Action (AD), also paid tribute to the politician, saying he had been held without justice without due process and had remained in situations "that should never have violated his basic rights".

Wider International Tensions

Strains between the US and Venezuela have become ever more tense over what Trump has called efforts to curb the flow of narcotics and migrants into the United States.

• US bombings on ships in the regional waters have killed dozens of people.
• Trump has accused Maduro of "releasing inmates from his jails and mental institutions" into the US.
• The US has labeled two Venezuelan drug cartels as extremist entities.

Maduro has conversely alleged the US of using its drug enforcement efforts as an excuse to depose his regime and get its hands on Venezuela's huge petroleum resources.

The America has also deployed a large fleet—its largest deployment in the region in many years—along with many soldiers.

In a parallel move, the Venezuelan armed forces according to reports inducted over five thousand six hundred soldiers in one go on Saturday, in response to what defense officials termed US "threats".