Death of Venezuela's Opposition Figure in Custody Called 'Vile' by United States Officials.

The US government has condemned the Maduro regime over the passing of a jailed opposition figure, calling it a "clear indication of the abhorrent essence" of President Nicolás Maduro's rule.

The political prisoner was found dead in his prison cell at the El Helicoide facility in Caracas, where he had been held for in excess of twelve months, according to advocacy organizations and dissident factions.

The officials in Venezuela reported that the 56-year-old exhibited symptoms of a heart attack and was taken to a medical facility, where he died on the weekend.

Escalating War of Words Between Washington and Venezuela

This latest statement from the US is part of an escalating diplomatic spat between the Trump administration and President Maduro, who has alleged America of pursuing a change in government.

In the past few months, the America has expanded its military presence in the Latin America and has conducted a succession of fatal attacks on vessels it claims have been used for trafficking narcotics.

US President Donald Trump has accused Maduro himself of being the head of one of the country's drug cartels—an accusation the Venezuelan president strongly rejects—and has warned of military action "on the ground".

"The detainee had been 'held without cause' in a 'center of abuse'," declared the US foreign policy division.

Background of the Imprisonment

The opposition figure was arrested in that year after joining numerous opposition figures to challenge the conclusion of that period's presidential election.

Venezuela's state-run election council declared Maduro the victor, notwithstanding opposition tallies suggesting their contender had won by a wide margin.

The vote were broadly rejected on the global scene as neither free nor fair, and ignited protests throughout the nation.

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

Reactions from Rights Groups and the Political Rivals

Venezuelan rights organization Foro Penal has expressed alarm over declining circumstances for detained dissidents in the Latin American nation.

"Another jailed opponent has lost his life in Venezuelan prisons. He had been imprisoned for a twelve months, in isolation," posted Alfredo Romero, the body's director, on a social media platform.

He added that the detainee had only been allowed one encounter from his child during the full duration of his incarceration. He added that over a dozen political prisoners have passed away in the nation since 2014.

Opposition groups have also denounced the regime over the passing of Díaz.

María Corina Machado, a leading dissident figure who won this year's Nobel Peace Prize but who remains in concealment to evade capture, commented that his demise was not an isolated incident.

"Sadly, it joins an alarming and heartbreaking series of deaths of jailed opponents held in the context of the electoral repression," she posted.

The coalition of rivals said that Díaz "passed away unfairly".

Díaz's own political party, Democratic Action (AD), also remembered the ex-leader, stating he had been unjustly detained without proper legal procedure and had been kept in conditions "that should never have violated his basic rights".

Wider Geopolitical Tensions

Strains between the United States and Venezuela have become ever more tense over what Trump has called actions to stem the influx of narcotics and migrants into the United States.

• US bombings on ships in the regional waters have killed over eighty individuals.
• Trump has alleged Maduro of "clearing out his prisons and psychiatric facilities" into the US.
• The US has labeled two Venezuelan drug cartels as extremist entities.

Maduro has for his part accused the US of using its anti-narcotics campaign as an excuse to remove his socialist government and get its hands on Venezuela's huge petroleum resources.

The US has also deployed a sizable fleet—its biggest movement in the region in decades—along with thousands of soldiers.

In a parallel move, the Venezuelan military reportedly enlisted over five thousand six hundred troops in a single event on the weekend, in response to what army commanders called US "threats".