Death of Venezuelan Opposition Figure in Custody Called 'Abhorrent' by US Authorities.

The United States has condemned the Maduro regime over the fatality of a imprisoned opposition figure, labeling it a "stark reminder of the abhorrent character" of President Nicolás Maduro's rule.

The former governor was found dead in his detention cell at the El Helicoide facility in Caracas, where he had been held for over a year, as reported by advocacy organizations and dissident factions.

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

Growing Tensions Between Washington and Caracas

This recent criticism from the US is part of an growing war of words between the White House and President Maduro, who has claimed Washington of seeking a change in government.

In the last several months, the America has boosted its armed forces deployment in the area and has executed a succession of deadly attacks on vessels it says have been used for trafficking illegal substances.

US President Donald Trump has claimed Maduro directly of being the chief of one of the country's narco-trafficking organizations—an accusation the Venezuelan president strongly rejects—and has hinted at military action "by land".

"He had been 'arbitrarily detained' in a 'torture centre'," said the US State Department's Bureau of Western Hemisphere Affairs.

Background of the Arrest

He was detained in that year after joining numerous opposition figures to contest the conclusion of that year's national vote.

Venezuela's pro-government election council declared Maduro the victor, even though opposition tallies indicating their contender had won by a overwhelming majority.

The electoral process were broadly rejected on the international stage as lacking in credibility, and sparked protests throughout the nation.

The former governor, who led the coastal region, was charged of "stoking division" and "extremism" for disputing Maduro's declaration of success.

Reactions from Rights Groups and the Opposition

Venezuelan rights organization Foro Penal has expressed alarm over declining circumstances for jailed opponents in the country.

"Yet another political prisoner has lost his life in Venezuelan prisons. He had been held for a twelve months, in isolation," wrote Alfredo Romero, the body's president, on a social media platform.

He noted that he had only been allowed one encounter from his family during the full duration of his detention. He also mentioned that over a dozen political prisoners have passed away in the country since 2014.

Dissident factions have also criticized the government over the passing of the former governor.

María Corina Machado, a well-known political rival who received this year's Nobel Peace Prize but who is in concealment to escape detention, stated that his death was not an isolated incident.

"Unfortunately, it contributes to an disturbing and painful chain of demises of political prisoners detained in the aftermath of the electoral repression," she wrote.

The Democratic Unitary Platform stated that the former governor "was an unjust death".

Díaz's own political party, Democratic Action (AD), also remembered the politician, noting he had been held without justice without due process and had stayed in circumstances "that should never have violated his human rights".

Wider International Tensions

Frictions between the United States and Venezuela have become increasingly strained over what Trump has described as efforts to stem the influx of narcotics and immigrants into the US.

• US air strikes on vessels in the Caribbean and Pacific have claimed the lives of over eighty people.
• Trump has claimed Maduro of "releasing inmates from his jails and insane asylums" into the US.
• The US has labeled two Venezuelan drug cartels as terrorist organisations.

Maduro has in turn claimed the US of using its war on drugs as an excuse to overthrow his regime and get its hands on Venezuela's enormous petroleum resources.

The United States has also deployed a large fleet—its most substantial presence in the region in decades—along with thousands of troops.

In a connected move, the Venezuelan army allegedly swore in more than 5,600 troops in a single event on the weekend, in answer to what army commanders described as US "intimidation".